if you can still reproduce the problem on that other browser I'd check for things like cookies and cached service workers and stuff... (if it's firefox, ctrl-shift-e and then go to the storage tab to look at cookies. Things like the domain, expiration date, and settings like httponly, secure, samesite should be innocuous to share but potentially useful to infer if it's an old stuck cookie, or using the wrong domain, etc)
ohhhh gotcha
if you can still reproduce the problem on that other browser I'd check for things like cookies and cached service workers and stuff... (if it's firefox, ctrl-shift-e and then go to the storage tab to look at cookies. Things like the domain, expiration date, and settings like httponly, secure, samesite should be innocuous to share but potentially useful to infer if it's an old stuck cookie, or using the wrong domain, etc)