Remove the trailing space as well, missed that.

core/ui/ViewToolbar/fold.tid

@@ -13,8 +13,7 @@ description: {{$:/language/Buttons/Fold/Hint}}
 <$text text={{$:/language/Buttons/Fold/Caption}}/>
 </span>
 </$list>
-</$button>
-</$reveal><$reveal type="match" state=<<folded-state>> text="hide" default="show"><$button tooltip={{$:/language/Buttons/Unfold/Hint}} aria-label={{$:/language/Buttons/Unfold/Caption}} class=<<tv-config-toolbar-class>>>
+</$button></$reveal><$reveal type="match" state=<<folded-state>> text="hide" default="show"><$button tooltip={{$:/language/Buttons/Unfold/Hint}} aria-label={{$:/language/Buttons/Unfold/Caption}} class=<<tv-config-toolbar-class>>>
 <$action-sendmessage $message="tm-fold-tiddler" $param=<<currentTiddler>> foldedState=<<folded-state>>/>
 <$list filter="[<tv-config-toolbar-icons>prefix[yes]]" variable="listItem">
 {{$:/core/images/unfold-button}}
@@ -24,5 +23,4 @@ description: {{$:/language/Buttons/Fold/Hint}}
 <$text text={{$:/language/Buttons/Unfold/Caption}}/>
 </span>
 </$list>
-</$button>
-</$reveal>
+</$button></$reveal>