I'm periodically getting the following error pop up on GZ forum pages.
Failed to load content css: https://cdn.tinymce.com/4/skins/lightgray/content.min.css
It shows up in a pinkish highlighted box floating over the pages. Has persisted through various versions of OS X Firefox. It might show up once in every 20ish pages viewed - only possible pattern I can see is it appears to be far more common if I open multiple tabs of GZ with different threads in each. Done the usual cache clear etc. Adblock installed but whitelisted for GZ (shows no items blocked).
Anyone else seeing this at all?