@lujok16 @ncoded I had the same issue. Should be fixed now:
https://forums.opera.com/topic/77673/opera-118-0-5439-0-developer-update/17

@marinaz909 Confirming it's fixed. Thanks.

Using 118.0.5439.0 x64 Win10, Bitwarden extension v2025.2.0 from the Opera store is automatically disabled with a malware warning, even after removing it and reinstalling from the store.

v2025.1.3 from the Chrome store is OK.

@dnzrzx34: Sounds related to the issue I've been having with the Bitwarden extension. It's unable to match logins to domains in the last few Opera developer builds (the tab section is empty and I have to manually search for each site I'm visiting in the vault section).

So at least three major extensions are partially broken, which means there are probably a lot more.

I'm reverting all the way back to a 96.x build for now, because the last 2-3 months of 97-98 developer builds have been a series of awful showstoppers for me. First it was the constant freezing. When that was fixed it was constant crashing on tab close. Now the extensions are broken for weeks.