newt
I too have this issue. Manjaro and GNOME. Removing %u from the .desktop doesn't resolve it for me though.
@filips123 is there a verbose or debug mode I can run it with? I can see if I can get some more info.
So in more recent updates, the crash occurs less often than it did previously, which makes it harder to poke. I added the empty DEBUG file in `~/.local/share/firefoxpwa`, and so...
I'm on v2.13.2, and ran the patch profiles and runtime from the extension, restarted my pc, but it still crashed first time.