I have cleared my entire cache and restarted Chrome to no avail. I can click on existing layers and bring up the relevant menu, but none of the templates, media, text, elements, or grids menus will populate.
I have a redacted javascript memory heap dump and a network activity dump from Chrome for you to pass along to your devs. Both are approx 78mb text files. How would you like to receive them? I tried to paste them here, but it crashed the browser tab.
I'm talking about the issue described in this post. I saw that you liked one of my comments and had a moment to dig into it a bit further. (My profession is in enterprise web services)