I'd guess it's one of your extensions. Try disable all of them and see if it still happens.
this post was submitted on 04 Apr 2024
15 points (100.0% liked)
Firefox
17804 readers
132 users here now
A place to discuss the news and latest developments on the open-source browser Firefox
founded 4 years ago
MODERATORS
Additionally, OP could probably stand to (re)run Malwarebytes.
Please state your OS, and firefox version.
Windows 11 22H2 and Firefox 124.0.2 (64 bits)