I started having issues opening a password protected entry across extensions/desktop/mobile. Went to https://www.reddit.com/r/Bitwarden/ and there are a bunch of posts in the past few days talking about similar issues
How do you guys keep your Bitwarden backed up? This reminded me to properly set that up. For now, I just exported the file and left it encrypted on a separate drive.
Not really a server crash but a bug that stops you from unlocking the vault. I guess going to an earlier version of it might help, but that would take time if you needed something quickly