diff --git a/app/autotranslate/client/lib/autotranslate.js b/app/autotranslate/client/lib/autotranslate.js
index bf3fbd7b64d..1ac9e7a6174 100644
--- a/app/autotranslate/client/lib/autotranslate.js
+++ b/app/autotranslate/client/lib/autotranslate.js
@@ -71,7 +71,7 @@ export const AutoTranslate = {
 		Tracker.autorun(() => {
 			Subscriptions.find().observeChanges({
 				changed: (id, fields) => {
-					if (fields.hasOwnProperty('autoTranslate')) {
+					if (fields.hasOwnProperty('autoTranslate') || fields.hasOwnProperty('autoTranslateLanguage')) {
 						mem.clear(this.findSubscriptionByRid);
 					}
 				},
diff --git a/app/autotranslate/client/views/autoTranslateFlexTab.js b/app/autotranslate/client/views/autoTranslateFlexTab.js
index 3add779473b..86d2ec52e34 100644
--- a/app/autotranslate/client/views/autoTranslateFlexTab.js
+++ b/app/autotranslate/client/views/autoTranslateFlexTab.js
@@ -99,7 +99,7 @@ Template.autoTranslateFlexTab.onCreated(function() {
 	this.saveSetting = () => {
 		const field = this.editing.get();
 		const subscription = Subscriptions.findOne({ rid: this.rid, 'u._id': Meteor.userId() });
-		const previousLanguage = subscription.autoTranslateLanguage;
+		const previousLanguage = subscription && subscription.autoTranslateLanguage;
 		let value;
 		switch (field) {
 			case 'autoTranslate':
diff --git a/app/ui-utils/client/lib/renderMessageBody.js b/app/ui-utils/client/lib/renderMessageBody.js
index a14969a2606..c7e5f1a03f0 100644
--- a/app/ui-utils/client/lib/renderMessageBody.js
+++ b/app/ui-utils/client/lib/renderMessageBody.js
@@ -1,4 +1,5 @@
 import s from 'underscore.string';
+import md5 from 'md5';
 
 import { callbacks } from '../../../callbacks';
 
@@ -32,4 +33,4 @@ export const renderMessageBody = mem((message) => {
 
 	return (Array.isArray(tokens) ? tokens.reverse() : [])
 		.reduce((html, { token, text }) => html.replace(token, () => text), html);
-}, 500, ({ _id, _updatedAt }) => _id && _updatedAt && _id + _updatedAt);
+}, 500, (message) => md5(JSON.stringify(message)));
diff --git a/package-lock.json b/package-lock.json
index 3ad6750de82..90fc0bbc9a5 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -181,7 +181,7 @@
 				},
 				"minimist": {
 					"version": "1.2.0",
-					"resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+					"resolved": "http://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
 					"integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
 					"dev": true
 				},
@@ -6514,7 +6514,7 @@
 		},
 		"@types/events": {
 			"version": "1.2.0",
-			"resolved": "https://registry.npmjs.org/@types/events/-/events-1.2.0.tgz",
+			"resolved": "http://registry.npmjs.org/@types/events/-/events-1.2.0.tgz",
 			"integrity": "sha512-KEIlhXnIutzKwRbQkGWb/I4HFqBuUykAdHgDED6xqwXJfONCjF5VoE0cXEiurh3XauygxzeDzgtXUqvLkxFzzA=="
 		},
 		"@types/express": {
@@ -8002,7 +8002,7 @@
 			"dependencies": {
 				"buffer": {
 					"version": "4.9.1",
-					"resolved": "https://registry.npmjs.org/buffer/-/buffer-4.9.1.tgz",
+					"resolved": "http://registry.npmjs.org/buffer/-/buffer-4.9.1.tgz",
 					"integrity": "sha1-bRu2AbB6TvztlwlBMgkwJ8lbwpg=",
 					"requires": {
 						"base64-js": "^1.0.2",
@@ -8034,7 +8034,7 @@
 		},
 		"axios": {
 			"version": "0.18.0",
-			"resolved": "https://registry.npmjs.org/axios/-/axios-0.18.0.tgz",
+			"resolved": "http://registry.npmjs.org/axios/-/axios-0.18.0.tgz",
 			"integrity": "sha1-MtU+SFHv3AoRmTts0AB4nXDAUQI=",
 			"requires": {
 				"follow-redirects": "^1.3.0",
@@ -8130,7 +8130,7 @@
 			"dependencies": {
 				"jsesc": {
 					"version": "1.3.0",
-					"resolved": "https://registry.npmjs.org/jsesc/-/jsesc-1.3.0.tgz",
+					"resolved": "http://registry.npmjs.org/jsesc/-/jsesc-1.3.0.tgz",
 					"integrity": "sha1-RsP+yMGJKxKwgz25vHYiF226s0s=",
 					"dev": true
 				}
@@ -8445,7 +8445,7 @@
 		},
 		"babel-plugin-add-module-exports": {
 			"version": "0.2.1",
-			"resolved": "https://registry.npmjs.org/babel-plugin-add-module-exports/-/babel-plugin-add-module-exports-0.2.1.tgz",
+			"resolved": "http://registry.npmjs.org/babel-plugin-add-module-exports/-/babel-plugin-add-module-exports-0.2.1.tgz",
 			"integrity": "sha1-mumh9KjcZ/DN7E9K7aHkOl/2XiU=",
 			"dev": true
 		},
@@ -8692,78 +8692,78 @@
 		},
 		"babel-plugin-syntax-async-functions": {
 			"version": "6.13.0",
-			"resolved": "https://registry.npmjs.org/babel-plugin-syntax-async-functions/-/babel-plugin-syntax-async-functions-6.13.0.tgz",
+			"resolved": "http://registry.npmjs.org/babel-plugin-syntax-async-functions/-/babel-plugin-syntax-async-functions-6.13.0.tgz",
 			"integrity": "sha1-ytnK0RkbWtY0vzCuCHI5HgZHvpU=",
 			"dev": true
 		},
 		"babel-plugin-syntax-async-generators": {
 			"version": "6.13.0",
-			"resolved": "https://registry.npmjs.org/babel-plugin-syntax-async-generators/-/babel-plugin-syntax-async-generators-6.13.0.tgz",
+			"resolved": "http://registry.npmjs.org/babel-plugin-syntax-async-generators/-/babel-plugin-syntax-async-generators-6.13.0.tgz",
 			"integrity": "sha1-a8lj67FuzLrmuStZbrfzXDQqi5o=",
 			"dev": true
 		},
 		"babel-plugin-syntax-class-constructor-call": {
 			"version": "6.18.0",
-			"resolved": "https://registry.npmjs.org/babel-plugin-syntax-class-constructor-call/-/babel-plugin-syntax-class-constructor-call-6.18.0.tgz",
+			"resolved": "http://registry.npmjs.org/babel-plugin-syntax-class-constructor-call/-/babel-plugin-syntax-class-constructor-call-6.18.0.tgz",
 			"integrity": "sha1-nLnTn+Q8hgC+yBRkVt3L1OGnZBY=",
 			"dev": true
 		},
 		"babel-plugin-syntax-class-properties": {
 			"version": "6.13.0",
-			"resolved": "https://registry.npmjs.org/babel-plugin-syntax-class-properties/-/babel-plugin-syntax-class-properties-6.13.0.tgz",
+			"resolved": "http://registry.npmjs.org/babel-plugin-syntax-class-properties/-/babel-plugin-syntax-class-properties-6.13.0.tgz",
 			"integrity": "sha1-1+sjt5oxf4VDlixQW4J8fWysJ94=",
 			"dev": true
 		},
 		"babel-plugin-syntax-decorators": {
 			"version": "6.13.0",
-			"resolved": "https://registry.npmjs.org/babel-plugin-syntax-decorators/-/babel-plugin-syntax-decorators-6.13.0.tgz",
+			"resolved": "http://registry.npmjs.org/babel-plugin-syntax-decorators/-/babel-plugin-syntax-decorators-6.13.0.tgz",
 			"integrity": "sha1-MSVjtNvePMgGzuPkFszurd0RrAs=",
 			"dev": true
 		},
 		"babel-plugin-syntax-do-expressions": {
 			"version": "6.13.0",
-			"resolved": "https://registry.npmjs.org/babel-plugin-syntax-do-expressions/-/babel-plugin-syntax-do-expressions-6.13.0.tgz",
+			"resolved": "http://registry.npmjs.org/babel-plugin-syntax-do-expressions/-/babel-plugin-syntax-do-expressions-6.13.0.tgz",
 			"integrity": "sha1-V0d1YTmqJtOQ0JQQsDdEugfkeW0=",
 			"dev": true
 		},
 		"babel-plugin-syntax-dynamic-import": {
 			"version": "6.18.0",
-			"resolved": "https://registry.npmjs.org/babel-plugin-syntax-dynamic-import/-/babel-plugin-syntax-dynamic-import-6.18.0.tgz",
+			"resolved": "http://registry.npmjs.org/babel-plugin-syntax-dynamic-import/-/babel-plugin-syntax-dynamic-import-6.18.0.tgz",
 			"integrity": "sha1-jWomIpyDdFqZgqRBBRVyyqF5sdo=",
 			"dev": true
 		},
 		"babel-plugin-syntax-exponentiation-operator": {
 			"version": "6.13.0",
-			"resolved": "https://registry.npmjs.org/babel-plugin-syntax-exponentiation-operator/-/babel-plugin-syntax-exponentiation-operator-6.13.0.tgz",
+			"resolved": "http://registry.npmjs.org/babel-plugin-syntax-exponentiation-operator/-/babel-plugin-syntax-exponentiation-operator-6.13.0.tgz",
 			"integrity": "sha1-nufoM3KQ2pUoggGmpX9BcDF4MN4=",
 			"dev": true
 		},
 		"babel-plugin-syntax-export-extensions": {
 			"version": "6.13.0",
-			"resolved": "https://registry.npmjs.org/babel-plugin-syntax-export-extensions/-/babel-plugin-syntax-export-extensions-6.13.0.tgz",
+			"resolved": "http://registry.npmjs.org/babel-plugin-syntax-export-extensions/-/babel-plugin-syntax-export-extensions-6.13.0.tgz",
 			"integrity": "sha1-cKFITw+QiaToStRLrDU8lbmxJyE=",
 			"dev": true
 		},
 		"babel-plugin-syntax-flow": {
 			"version": "6.18.0",
-			"resolved": "https://registry.npmjs.org/babel-plugin-syntax-flow/-/babel-plugin-syntax-flow-6.18.0.tgz",
+			"resolved": "http://registry.npmjs.org/babel-plugin-syntax-flow/-/babel-plugin-syntax-flow-6.18.0.tgz",
 			"integrity": "sha1-TDqyCiryaqIM0lmVw5jE63AxDI0=",
 			"dev": true
 		},
 		"babel-plugin-syntax-function-bind": {
 			"version": "6.13.0",
-			"resolved": "https://registry.npmjs.org/babel-plugin-syntax-function-bind/-/babel-plugin-syntax-function-bind-6.13.0.tgz",
+			"resolved": "http://registry.npmjs.org/babel-plugin-syntax-function-bind/-/babel-plugin-syntax-function-bind-6.13.0.tgz",
 			"integrity": "sha1-SMSV8Xe98xqYHnMvVa3AvdJgH0Y=",
 			"dev": true
 		},
 		"babel-plugin-syntax-jsx": {
 			"version": "6.18.0",
-			"resolved": "https://registry.npmjs.org/babel-plugin-syntax-jsx/-/babel-plugin-syntax-jsx-6.18.0.tgz",
+			"resolved": "http://registry.npmjs.org/babel-plugin-syntax-jsx/-/babel-plugin-syntax-jsx-6.18.0.tgz",
 			"integrity": "sha1-CvMqmm4Tyno/1QaeYtew9Y0NiUY="
 		},
 		"babel-plugin-syntax-object-rest-spread": {
 			"version": "6.13.0",
-			"resolved": "https://registry.npmjs.org/babel-plugin-syntax-object-rest-spread/-/babel-plugin-syntax-object-rest-spread-6.13.0.tgz",
+			"resolved": "http://registry.npmjs.org/babel-plugin-syntax-object-rest-spread/-/babel-plugin-syntax-object-rest-spread-6.13.0.tgz",
 			"integrity": "sha1-/WU28rzhODb/o6VFjEkDpZe7O/U=",
 			"dev": true
 		},
@@ -9238,7 +9238,7 @@
 		},
 		"babel-preset-es2015": {
 			"version": "6.3.13",
-			"resolved": "https://registry.npmjs.org/babel-preset-es2015/-/babel-preset-es2015-6.3.13.tgz",
+			"resolved": "http://registry.npmjs.org/babel-preset-es2015/-/babel-preset-es2015-6.3.13.tgz",
 			"integrity": "sha1-l9zn7ykuGMubK3VF2AxZPCjZUX8=",
 			"dev": true,
 			"requires": {
@@ -9297,7 +9297,7 @@
 		},
 		"babel-preset-react": {
 			"version": "6.3.13",
-			"resolved": "https://registry.npmjs.org/babel-preset-react/-/babel-preset-react-6.3.13.tgz",
+			"resolved": "http://registry.npmjs.org/babel-preset-react/-/babel-preset-react-6.3.13.tgz",
 			"integrity": "sha1-E9VeBqZfqqoHw5v2Op2DbgMhFvo=",
 			"dev": true,
 			"requires": {
@@ -10291,7 +10291,7 @@
 		},
 		"babel-preset-stage-0": {
 			"version": "6.3.13",
-			"resolved": "https://registry.npmjs.org/babel-preset-stage-0/-/babel-preset-stage-0-6.3.13.tgz",
+			"resolved": "http://registry.npmjs.org/babel-preset-stage-0/-/babel-preset-stage-0-6.3.13.tgz",
 			"integrity": "sha1-eKN8VvCzmI8qeZMtywzrj/N3sNE=",
 			"dev": true,
 			"requires": {
@@ -11204,7 +11204,7 @@
 		},
 		"bl": {
 			"version": "1.2.2",
-			"resolved": "https://registry.npmjs.org/bl/-/bl-1.2.2.tgz",
+			"resolved": "http://registry.npmjs.org/bl/-/bl-1.2.2.tgz",
 			"integrity": "sha512-e8tQYnZodmebYDWGH7KMRvtzKXaJHx3BbilrgZCfvyLUYdKpK1t5PSPmpkny/SgiTSCnjfLW7v5rlONXVFkQEA==",
 			"requires": {
 				"readable-stream": "^2.3.5",
@@ -11469,7 +11469,7 @@
 		},
 		"browserify-aes": {
 			"version": "1.2.0",
-			"resolved": "https://registry.npmjs.org/browserify-aes/-/browserify-aes-1.2.0.tgz",
+			"resolved": "http://registry.npmjs.org/browserify-aes/-/browserify-aes-1.2.0.tgz",
 			"integrity": "sha512-+7CHXqGuspUn/Sl5aO7Ea0xWGAtETPXNSAjHo48JfLdPWcMng33Xe4znFvQweqc/uzk5zSOI3H52CYnjCfb5hA==",
 			"dev": true,
 			"requires": {
@@ -11506,7 +11506,7 @@
 		},
 		"browserify-rsa": {
 			"version": "4.0.1",
-			"resolved": "https://registry.npmjs.org/browserify-rsa/-/browserify-rsa-4.0.1.tgz",
+			"resolved": "http://registry.npmjs.org/browserify-rsa/-/browserify-rsa-4.0.1.tgz",
 			"integrity": "sha1-IeCr+vbyApzy+vsTNWenAdQTVSQ=",
 			"dev": true,
 			"requires": {
@@ -11699,7 +11699,7 @@
 				},
 				"readable-stream": {
 					"version": "1.1.14",
-					"resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
+					"resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
 					"integrity": "sha1-fPTFTvZI44EwhMY23SB54WbAgdk=",
 					"requires": {
 						"core-util-is": "~1.0.0",
@@ -11811,7 +11811,7 @@
 			"dependencies": {
 				"callsites": {
 					"version": "2.0.0",
-					"resolved": "https://registry.npmjs.org/callsites/-/callsites-2.0.0.tgz",
+					"resolved": "http://registry.npmjs.org/callsites/-/callsites-2.0.0.tgz",
 					"integrity": "sha1-BuuE8A7qQT2oav/vrL/7Ngk7PFA=",
 					"dev": true
 				}
@@ -11893,7 +11893,7 @@
 			"dependencies": {
 				"cheerio": {
 					"version": "0.19.0",
-					"resolved": "https://registry.npmjs.org/cheerio/-/cheerio-0.19.0.tgz",
+					"resolved": "http://registry.npmjs.org/cheerio/-/cheerio-0.19.0.tgz",
 					"integrity": "sha1-dy5wFfLuKZZQltcepBdbdas1SSU=",
 					"requires": {
 						"css-select": "~1.0.0",
@@ -11905,7 +11905,7 @@
 				},
 				"css-select": {
 					"version": "1.0.0",
-					"resolved": "https://registry.npmjs.org/css-select/-/css-select-1.0.0.tgz",
+					"resolved": "http://registry.npmjs.org/css-select/-/css-select-1.0.0.tgz",
 					"integrity": "sha1-sRIcpRhI3SZOIkTQWM7iVN7rRLA=",
 					"requires": {
 						"boolbase": "~1.0.0",
@@ -11916,7 +11916,7 @@
 				},
 				"css-what": {
 					"version": "1.0.0",
-					"resolved": "https://registry.npmjs.org/css-what/-/css-what-1.0.0.tgz",
+					"resolved": "http://registry.npmjs.org/css-what/-/css-what-1.0.0.tgz",
 					"integrity": "sha1-18wt9FGAZm+Z0rFEYmOUaeAPc2w="
 				},
 				"domhandler": {
@@ -11937,7 +11937,7 @@
 				},
 				"htmlparser2": {
 					"version": "3.8.3",
-					"resolved": "https://registry.npmjs.org/htmlparser2/-/htmlparser2-3.8.3.tgz",
+					"resolved": "http://registry.npmjs.org/htmlparser2/-/htmlparser2-3.8.3.tgz",
 					"integrity": "sha1-mWwosZFRaovoZQGn15dX5ccMEGg=",
 					"requires": {
 						"domelementtype": "1",
@@ -11958,7 +11958,7 @@
 						},
 						"entities": {
 							"version": "1.0.0",
-							"resolved": "https://registry.npmjs.org/entities/-/entities-1.0.0.tgz",
+							"resolved": "http://registry.npmjs.org/entities/-/entities-1.0.0.tgz",
 							"integrity": "sha1-sph6o4ITR/zeZCsk/fyeT7cSvyY="
 						}
 					}
@@ -11970,12 +11970,12 @@
 				},
 				"lodash": {
 					"version": "3.10.1",
-					"resolved": "https://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz",
+					"resolved": "http://registry.npmjs.org/lodash/-/lodash-3.10.1.tgz",
 					"integrity": "sha1-W/Rejkm6QYnhfUgnid/RW9FAt7Y="
 				},
 				"readable-stream": {
 					"version": "1.1.14",
-					"resolved": "https://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
+					"resolved": "http://registry.npmjs.org/readable-stream/-/readable-stream-1.1.14.tgz",
 					"integrity": "sha1-fPTFTvZI44EwhMY23SB54WbAgdk=",
 					"requires": {
 						"core-util-is": "~1.0.0",
@@ -11986,7 +11986,7 @@
 				},
 				"string_decoder": {
 					"version": "0.10.31",
-					"resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
+					"resolved": "http://registry.npmjs.org/string_decoder/-/string_decoder-0.10.31.tgz",
 					"integrity": "sha1-YuIDvEF2bGwoyfyEMB2rHFMQ+pQ="
 				}
 			}
@@ -12064,7 +12064,7 @@
 		},
 		"chalk": {
 			"version": "1.1.3",
-			"resolved": "https://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
+			"resolved": "http://registry.npmjs.org/chalk/-/chalk-1.1.3.tgz",
 			"integrity": "sha1-qBFcVeSnAv5NFQq9OHKCKn4J/Jg=",
 			"requires": {
 				"ansi-styles": "^2.2.1",
@@ -12104,6 +12104,12 @@
 			"integrity": "sha1-tUc7M9yXxCTl2Y3IfVXU2KKci/I=",
 			"dev": true
 		},
+		"charenc": {
+			"version": "0.0.2",
+			"resolved": "https://registry.npmjs.org/charenc/-/charenc-0.0.2.tgz",
+			"integrity": "sha1-wKHS86cJLgN3S/qD8UwPxXkKhmc=",
+			"dev": true
+		},
 		"chart.js": {
 			"version": "2.7.3",
 			"resolved": "https://registry.npmjs.org/chart.js/-/chart.js-2.7.3.tgz",
@@ -12138,7 +12144,7 @@
 		},
 		"cheerio": {
 			"version": "0.22.0",
-			"resolved": "https://registry.npmjs.org/cheerio/-/cheerio-0.22.0.tgz",
+			"resolved": "http://registry.npmjs.org/cheerio/-/cheerio-0.22.0.tgz",
 			"integrity": "sha1-qbqoYKP5tZWmuBsahocxIe06Jp4=",
 			"requires": {
 				"css-select": "~1.2.0",
@@ -12167,7 +12173,7 @@
 		},
 		"chimp": {
 			"version": "0.51.1",
-			"resolved": "https://registry.npmjs.org/chimp/-/chimp-0.51.1.tgz",
+			"resolved": "http://registry.npmjs.org/chimp/-/chimp-0.51.1.tgz",
 			"integrity": "sha1-6hIbzfJsidV/jvNBlUDPPCeaPMU=",
 			"dev": true,
 			"requires": {
@@ -12213,7 +12219,7 @@
 			"dependencies": {
 				"async": {
 					"version": "0.9.2",
-					"resolved": "https://registry.npmjs.org/async/-/async-0.9.2.tgz",
+					"resolved": "http://registry.npmjs.org/async/-/async-0.9.2.tgz",
 					"integrity": "sha1-rqdNXmHB+JlhO/ZL2mbUx48v0X0=",
 					"dev": true
 				},
@@ -12285,7 +12291,7 @@
 				},
 				"minimist": {
 					"version": "1.2.0",
-					"resolved": "https://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
+					"resolved": "http://registry.npmjs.org/minimist/-/minimist-1.2.0.tgz",
 					"integrity": "sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=",
 					"dev": true
 				},
@@ -12337,7 +12343,7 @@
 				},
 				"progress": {
 					"version": "1.1.8",
-					"resolved": "https://registry.npmjs.org/progress/-/progress-1.1.8.tgz",
+					"resolved": "http://registry.npmjs.org/progress/-/progress-1.1.8.tgz",
 					"integrity": "sha1-4mDHj2Fhzdmw5WzD4Khd4Xx6V74=",
 					"dev": true
 				},
@@ -12360,7 +12366,7 @@
 		},
 		"chokidar": {
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-					"resolved": "https://registry.npmjs.org/mime-types/-/mime-types-2.0.14.tgz",
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diff --git a/package.json b/package.json
index 82625d5d864..e8ef9401fa9 100644
--- a/package.json
+++ b/package.json
@@ -90,6 +90,7 @@
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