Looks nice. I've been a 1password user for some years, but the lack of a proper linux client is a pest. Bitwarden seems like it would be worth a try.
(An aside: every time someone points out a golang repo I'm impressed by the code readability, given I'm only passingly familiar with the language)
[Edit: OK it turns out to be an electron app, and a barely functional one at that]
But more generally, when trying new software I tend to exercise its functionality as a first QA pass. There's a 'select all' entry in the Edit menu, and a keyboard shortcut, so it seems reasonable to try it. The failure isn't in itself a show stopper, but it's a mark against the app for me.
I'll keep an eye on Bitwarden - I like the overall shape of the project, but it's not ready for me yet (had some problems with the firefox extension also).