Change single-column mode to scroll the whole page (#11359)

Fix #10840

app/javascript/mastodon/features/followers/index.js

@@ -36,6 +36,7 @@ class Followers extends ImmutablePureComponent {
     hasMore: PropTypes.bool,
     blockedBy: PropTypes.bool,
     isAccount: PropTypes.bool,
+    multiColumn: PropTypes.bool,
   };
 
   componentWillMount () {
@@ -55,7 +56,7 @@ class Followers extends ImmutablePureComponent {
   }, 300, { leading: true });
 
   render () {
-    const { shouldUpdateScroll, accountIds, hasMore, blockedBy, isAccount } = this.props;
+    const { shouldUpdateScroll, accountIds, hasMore, blockedBy, isAccount, multiColumn } = this.props;
 
     if (!isAccount) {
       return (
@@ -87,6 +88,7 @@ class Followers extends ImmutablePureComponent {
           prepend={<HeaderContainer accountId={this.props.params.accountId} hideTabs />}
           alwaysPrepend
           emptyMessage={emptyMessage}
+          bindToDocument={!multiColumn}
         >
           {blockedBy ? [] : accountIds.map(id =>
             <AccountContainer key={id} id={id} withNote={false} />