* SUMMARY CSS Regions DOM Trees sometimes do not work. * STEPS TO REPRODUCE 1. Inspect <http://blattchat.com/demos/regions/basic/> 2. Show Resources Tab 3. Select "main-thread" flow => Node is expanded but not showing Text Node * WORKAROUND Option+Click the disclosure triangle a few times forces the text node to appear.
<rdar://problem/21890342>
CSS regions were removed in r222356 <https://webkit.org/b/177287>. :P