Out of curiosity, why would you ever want to select all in your password manager?

In this particular case it's because I wanted to move all the items from a single imported 1Password vault (I have a few for different purposes) into a Bitwarden folder.

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.

Folder organization makes sense. My guess is this shows up as a shortcut “for free” as a result of it being electron based. I think the “native” client is the newest client Bitwarden offers and probably hasn’t gotten as much polish yet.

Yes agree on the shortcut 'for free' aspect, but I'd consider expunging unused default menu items as part of a very basic pre-release checklist, rather than 'polish'. I don't share the frequently-expressed antipathy to electron apps, but many are quite shoddy, which only adds to their poor reputation. I've seen commercial apps which (for example) replace their whole window contents with a dragged image.

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).