Some tabs are crashing in Firefox Nightly on #Mastodon 4.5.8, especially when I consult my profile page.
I don't have this problem with Firefox Release, either on Windows or KDE Neon. So I'll wait until they fix the issue for the Nightly (alpha, remember) version and then switch back to the stable version for a few days.
I have activated the bug report on Nightly, and the URL is attached.