PLT-6890 Fix various scrolling issues (#6727)

* Fix various scrolling issues

* Move reaction scrolling to reaction list

* Handle scrolling when RHS opens

* Only run scroll update code when posts change

1 files changed, 8 insertions, 0 deletions

diff --git a/webapp/components/post_view/reaction_list/reaction_list.jsx b/webapp/components/post_view/reaction_list/reaction_list.jsx
index 516f5332f..4d2f3a5fc 100644
--- a/webapp/components/post_view/reaction_list/reaction_list.jsx
+++ b/webapp/components/post_view/reaction_list/reaction_list.jsx
@@ -4,6 +4,8 @@
 import React from 'react';
 import PropTypes from 'prop-types';
 
+import {postListScrollChange} from 'actions/global_actions.jsx';
+
 import Reaction from 'components/post_view/reaction';
 
 export default class ReactionListView extends React.PureComponent {
@@ -38,6 +40,12 @@ export default class ReactionListView extends React.PureComponent {
         }
     }
 
+    componentDidUpdate(prevProps) {
+        if (this.props.reactions !== prevProps.reactions) {
+            postListScrollChange();
+        }
+    }
+
     render() {
         if (!this.props.post.has_reactions || (this.props.reactions && this.props.reactions.length === 0)) {
             return null;