Still works well but the latest update degraded functionality a bit. Icons often have to be manually added to the PWA, and the Windows OS can no longer store persistent links to the PWA in the taskbar - "pin to taskbar" results in a link that gets invalidated every time FF starts. IIRC that feature used to work.

I like the app and i can run it on debian, but installing on Ubuntu isn't successful yet.

Working great! I can use multiple profiles to access the same website with alternative accounts, and I can sync all my Firefox apps to access there as well (uBlock and Bitwarden 🙏🏻).

This is great! It works much better than I expected.
I couldn't get the extension to work in Firefox installed via Snap on Ubuntu, but that doesn’t bother me at all.
Thank you!

First time user: I successfully installed a PWA but when launch pressed only a blank page appeared.

Marvellous. Very well integrated in kde menus

PWAs on Firefox – that's actually something I've wanted for a long time. I use them for MS Teams and, what can I say (?), at least as good as the variant that works with the other browser engine.
To all decision-makers at Mozilla: please reconsider your decision regarding support for PWAs. At the very least, you should praise Filip Štamcar and officially recommend his plugin.

The last feature that I was missing in Firefox was PWA. Thank you!