I see this problem on both Firefox 121.0.1, Windows 10, and MacOS Monterey, Firefox 121.0.1. It’s new- I saw it for the first time yesterday morning. I haven’t made any changes to my browser configuration in that time.
There’s quite a few errors in the console:
Uncaught TypeError: WeakMap key undefined must be an object or an unregistered symbol
executeCommands https://projects.blender.org/blender/blender/pulls?q=&type=all&sort=recentupdate&state=open&labels=&milestone=0&project=0&assignee=0&poster=0:529
commandsListener https://projects.blender.org/blender/blender/pulls?q=&type=all&sort=recentupdate&state=open&labels=&milestone=0&project=0&assignee=0&poster=0:652
13 pulls:529:36
Uncaught TypeError: WeakMap key undefined must be an object or an unregistered symbol
executeCommands https://projects.blender.org/blender/blender/pulls?q=&type=all&sort=recentupdate&state=open&labels=&milestone=0&project=0&assignee=0&poster=0:529
commandsListener https://projects.blender.org/blender/blender/pulls?q=&type=all&sort=recentupdate&state=open&labels=&milestone=0&project=0&assignee=0&poster=0:652
37 pulls:529:36
TypeError: a.default.detectStore(...) is undefined h1-check.js:1:1301
Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://analytics.blender.org/api/event. (Reason: CORS request did not succeed). Status code: (null).
Uncaught TypeError: WeakMap key undefined must be an object or an unregistered symbol
executeCommands https://projects.blender.org/blender/blender/pulls?q=&type=all&sort=recentupdate&state=open&labels=&milestone=0&project=0&assignee=0&poster=0:529
commandsListener https://projects.blender.org/blender/blender/pulls?q=&type=all&sort=recentupdate&state=open&labels=&milestone=0&project=0&assignee=0&poster=0:652
pulls:529:36