I've recently switched from Firefox' vault to bitwarden.
I'd say it works 50% of the time. On desktop Firefox it just doesn't manage to autofill things some days and I end up copy-pasting my credentials.
On mobile is happy to present me with suggested logins for a page. If I have one, pick or generate one, then it's all dandy. If I decide I'd rather not, then there's no way out of that view. I end up force-killing Firefox mobile.
Maybe the app works better than the browser extension.
I never had that issue. Sorry to hear that. I did prefer it when it was lockwise. Having a standalone app was easier to use IMHO but I understand why they integrated it