I’m not sure what’s going on, but I’m only experiencing this problem in Firefox 43.0.1
The editor is all messed up. I ran a Firefox updated, restarted my browser and now I’m having this issue. Here’s an image of what I’m seeing now.
Also, not seeing the static WordPress menubar at the top when viewing my website now. Here’s what I see instead:
Any idea what’s going on since I updated FF?
This is what I see in the network console:
I just figured it out… Apparently, Google had flagged my js/css as malware. I disputed it and now everything is working perfectly.