Go here;
Scroll to end, click “Submit support request”.
I then get;
What OS are you using? There is a chance an extension is interfering.
I just tried on Firefox in Linux, and it looks to work fine for me. Seems like you have uBlock origin, showing one element blocked. I have uBlock origin too, but perhaps you have an overly aggressive filter list. I’d suggest killing all extensions to test. Diagnose Firefox issues using Troubleshoot Mode | Firefox Help
Working now - no changes made my end.
So prolly was broken, but not for long.