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Gnome Papers application (flatpak) not showing its main window when launched from Gnome Shell or Arc Menu if Arc Menu extension is enabled

System information:

  • Ubuntu 24.10, Wayland, Intel graphics card (Nvidia card is fully disabled)
  • Gnome Papers 47.0 flatpak downloaded from Flathub
  • Arc Menu version 63 installed from Gnome Extensions web page

Summary

Gnome Papers is not shown when launched from Gnome Menu or Arc Menu when the Arc Menu extension is enabled but it's working well when launched from terminal with flatpak run org.gnome.Papers.

Description

I've installed Gnome Papers from Flathub using Software application in Ubuntu. Just after the installation I tried to launch the application using Gnome's menu or Arc Menu (Win+A, write 'Papers' and hit Enter) and it is never shown if the Arc Menu extension is enabled. If I disable the Arc Menu extension and launch que application from Gnome's menu it works as expected.

I only indicate the error with Gnome Papers but it's likely that it occurs with other flatpak applications.

If I show the flatpak processes about Papers there are always two of them:

user@box ~ • $ ps aux | grep Papers
user     291005  0.1  0.0 296088 20276 ?        Sl   12:06   0:00 /usr/bin/flatpak run --branch=stable --arch=x86_64 --command=papers org.gnome.Papers
user     291012 99.4  0.0 296088  3836 ?        R    12:06   0:11 /usr/bin/flatpak run --branch=stable --arch=x86_64 --command=papers org.gnome.Papers

The application is always running (it's never killed/finalized) but it never shows the UI to the user (the UI never appears).

If I try to launch the application from a console using both flatpak run org.gnome.Papers or /usr/bin/flatpak run --branch=stable --arch=x86_64 --command=papers org.gnome.Papers it works without problem (UI is shown immediately).