Description of the bug

When starting prusaslicer with "flatpak run com.prusa3d.PrusaSlicer", the application starts and works normally.
When starting with:

• "flatpak --env=__NV_PRIME_RENDER_OFFLOAD=1 --env=__GLX_VENDOR_LIBRARY_NAME=nvidia run com.prusa3d.PrusaSlicer"
• "switcherooctl -g 1 com.prusa3d.PrusaSlicer"
  The application stops here:

nicolas@pop-os:~$ flatpak run --env=__NV_PRIME_RENDER_OFFLOAD=1 --env=__GLX_VENDOR_LIBRARY_NAME=nvidia com.prusa3d.PrusaSlicer 
--------------------------------------------------------------------------
Message: 21:35:42: Starting PrusaSlicer flatpak with entrypoint script
--------------------------------------------------------------------------
nicolas@pop-os:~$

Starting the 2.8.0 AppImage version with switcherooctl -g 1 or with the environment variables specified before, the application starts on the dedicated GPU as intended. Other flatpak applications i am using run on the dedicated GPU without issue.
Enabling device=dri won't fix the issue.

Project file & How to reproduce

• install the flatpak version of prusaslicer on a device with hybrid graphics
• run prusaslicer with either of the above mentioned commands

Checklist of files included above

• Project file
• Screenshot

Version of PrusaSlicer

2.9.0

Operating system

Pop OS 22.04

Printer model

any