Fix clicking on already-loaded thread scrolling to the top of the thread (#27338)

app/javascript/mastodon/features/status/index.jsx

@@ -220,6 +220,8 @@ class Status extends ImmutablePureComponent {
 
   componentDidMount () {
     attachFullscreenListener(this.onFullScreenChange);
+
+    this._scrollStatusIntoView();
   }
 
   UNSAFE_componentWillReceiveProps (nextProps) {
@@ -579,10 +581,10 @@ class Status extends ImmutablePureComponent {
     this.node = c;
   };
 
-  componentDidUpdate (prevProps) {
+  _scrollStatusIntoView () {
-    const { status, ancestorsIds, multiColumn } = this.props;
+    const { status, multiColumn } = this.props;
 
-    if (status && (ancestorsIds.size > prevProps.ancestorsIds.size || prevProps.status?.get('id') !== status.get('id'))) {
+    if (status) {
       window.requestAnimationFrame(() => {
         this.node?.querySelector('.detailed-status__wrapper')?.scrollIntoView(true);
 
@@ -599,6 +601,14 @@ class Status extends ImmutablePureComponent {
     }
   }
 
+  componentDidUpdate (prevProps) {
+    const { status, ancestorsIds } = this.props;
+
+    if (status && (ancestorsIds.size > prevProps.ancestorsIds.size || prevProps.status?.get('id') !== status.get('id'))) {
+      this._scrollStatusIntoView();
+    }
+  }
+
   componentWillUnmount () {
     detachFullscreenListener(this.onFullScreenChange);
   }