New Mail button feature broken inside Outlook on Firefox Win10
When using Firefox latest version 128.0.3 (64-bit) on Win10 22H2 the "New mail" feature inside Outlook (Office365) is completely broken, check screenshot: when you click "New mail" the layout of the box is out of whack, you can type but the elements are all over the place.
I have tested it on Chromium, same login and it works just fine and shows nicely.
I've tried Firefox Troubleshoot mode and I am getting same wrong error as in the screenshot; also reseted the settings in Firefox and getting same thing.
It'd be amazing if anyone has any idea how to fix this, it has become unusable and I feel like I'll have to go back to Chromium or Brave and don't want to do it, I wanna keep using Firefox : (