Fixed issue with alert links in alert list panel causing panel not found errors, fixes #15680

(cherry picked from commit 91fc73bf82)

public/app/features/dashboard/containers/DashboardPage.tsx

@@ -92,11 +92,12 @@ export class DashboardPage extends PureComponent<Props, State> {
   componentWillUnmount() {
     if (this.props.dashboard) {
       this.props.cleanUpDashboard();
+      this.setPanelFullscreenClass(false);
     }
   }
 
   componentDidUpdate(prevProps: Props) {
-    const { dashboard, editview, urlEdit, urlFullscreen, urlPanelId } = this.props;
+    const { dashboard, editview, urlEdit, urlFullscreen, urlPanelId, urlUid } = this.props;
 
     if (!dashboard) {
       return;
@@ -107,6 +108,12 @@ export class DashboardPage extends PureComponent<Props, State> {
       document.title = dashboard.title + ' - Grafana';
     }
 
+    // Due to the angular -> react url bridge we can ge an update here with new uid before the container unmounts
+    // Can remove this condition after we switch to react router
+    if (prevProps.urlUid !== urlUid) {
+      return;
+    }
+
     // handle animation states when opening dashboard settings
     if (!prevProps.editview && editview) {
       this.setState({ isSettingsOpening: true });