I am using Firefox as of last week I made the switch to the browser a different password manager and so far it is fine but there have been a couple of hiccups but it’s not necessarily a Firefox issue but an implementation with Android issue.
For example auto forwarding to an app from a webpage in Firefox has worked half the time for me and the other half not so much.
This is a small example, having Google Chrome and like wise the Google app be native to Android so they move back and forth between one another and are interchangeable while using my phone is much more smooth on my Android device.
Other than that, I am not positive as to why. On Desktop, zero issues. Works like a charm.