From my limited experience, having just picked up Proton Pass, the PC version (chrome addon in this instance) has the option to autofill generated passwords when you're changing your existing passwords (or creating accounts).

When this is attempted on android, it seems you have to open the app and manually generate a password, which is time consuming and inconvenient.

This might just be me being new, and not being able to dig up info regarding this, but it seems to not exist / not work currently. I would love to use Proton Pass for everything, but this is a huge inconvenience that might make me swap to something else. Would love to hear other people's opinion / know-how on this.