Fix some regressions

Signed-off-by: Šimon Brandner <simon.bra.ag@gmail.com>

src/components/views/elements/AppTile.tsx

@@ -146,7 +146,7 @@ export default class AppTile extends React.Component<IProps, IState> {
         return {
             initialising: true, // True while we are mangling the widget URL
             // True while the iframe content is loading
-            loading: this.props.waitForIframeLoad,
+            loading: this.props.waitForIframeLoad && !PersistedElement.isMounted(this.persistKey),
             // Assume that widget has permission to load if we are the user who
             // added it to the room, or if explicitly granted by the user
             hasPermissionToLoad: this.hasPermissionToLoad(newProps),
@@ -247,6 +247,12 @@ export default class AppTile extends React.Component<IProps, IState> {
                 this.resetWidget(nextProps);
             }
         }
+
+        if (nextProps.widgetPageTitle !== this.props.widgetPageTitle) {
+            this.setState({
+                widgetPageTitle: nextProps.widgetPageTitle,
+            });
+        }
     }
 
     /**

src/components/views/elements/PersistedElement.tsx

@@ -104,6 +104,10 @@ export default class PersistedElement extends React.Component<IProps> {
         }
     }
 
+    static isMounted(persistKey) {
+        return Boolean(getContainer('mx_persistedElement_' + persistKey));
+    }
+
     private collectChildContainer = (ref: HTMLDivElement): void => {
         if (this.childContainer) {
             this.resizeObserver.unobserve(this.childContainer);