From 4cb15501a253aedc841f68852319edbf3943b48e Mon Sep 17 00:00:00 2001
From: Alexander Skvortsov <38059171+askvortsov1@users.noreply.github.com>
Date: Thu, 21 Apr 2022 18:03:41 -0400
Subject: [PATCH] fix(tags): TagDiscussionModal don't go to null tag (#3404)

If the tag we are trying to select/highlight is undefined, we should not run the scroll animation.
---
 extensions/tags/js/src/forum/components/TagDiscussionModal.tsx | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/extensions/tags/js/src/forum/components/TagDiscussionModal.tsx b/extensions/tags/js/src/forum/components/TagDiscussionModal.tsx
index 814522e8e..ca3b5f680 100644
--- a/extensions/tags/js/src/forum/components/TagDiscussionModal.tsx
+++ b/extensions/tags/js/src/forum/components/TagDiscussionModal.tsx
@@ -322,7 +322,7 @@ export default class TagDiscussionModal extends Modal<TagDiscussionModalAttrs> {
 
     m.redraw();
 
-    if (scrollToItem) {
+    if (scrollToItem && this.selectedTag) {
       const dropdownScroll = $dropdown.scrollTop()!;
       const dropdownTop = $dropdown.offset()!.top;
       const dropdownBottom = dropdownTop + $dropdown.outerHeight()!;