Simplify #377 fix.

src/General/UI.coffee

@@ -299,12 +299,7 @@ UI = do ->
     $.on root, 'mousemove', o.hover
     <% if (type === 'userscript') { %>
     # Workaround for https://github.com/MayhemYDG/4chan-x/issues/377
-    o.workaround = (e) ->
-      node = e.target
-      while node
-        return if node is root
-        node = node.parentNode
-      o.hoverend()
+    o.workaround = (e) -> o.hoverend() unless root.contains e.target
     $.on doc,  'mousemove', o.workaround
     <% } %>
   hover = (e) ->