Flatpak dumps core if ran in NixOS from desktop file, but works in command line exec

[MuntasirSZN]

OS: NixOS

OBS Studio Version 32.2.1

https://obsproject.com/logs/ioKIxndNQ8FnaxZe

Dumps core:
```
PID: 62280 (obs)
TID: 62280 (obs)
UID: 1000 (muntasir)
GID: 100 (users)
Signal: 6 (ABRT) si_code: SI_TKILL
Timestamp: Fri 2026-07-31 21:41:45 +06 (24min ago)
Command Line: obs
Executable: /app/bin/obs
Control Group: /user.slice/user-1000.slice/user@1000.service/app.slice/app-flatpak-com.obsproject.Studio-133400207.scope
Unit: user@1000.service
User Unit: app-flatpak-com.obsproject.Studio-133400207.scope
Slice: user-1000.slice
Owner UID: 1000 (muntasir)
Boot ID: 7594d77617924725bb8ce4cc5cb9720d
Machine ID: 4e85b1f1edb94c8a8ecea83fe543d7cd
Hostname: nixos
Storage: /var/lib/systemd/coredump/core.obs.1000.7594d77617924725bb8ce4cc5cb9720d.62280.1785512505000000.zst (present)
Size on Disk: 1.4M
Message: Process 62280 (obs) of user 1000 dumped core.

Stack trace of thread 2:
#0 0x000075fb06a2a952 n/a (/usr/lib/x86_64-linux-gnu/libc.so.6 + 0x29952)
#1 0x000075fb070d02f4 n/a (/app/lib/libQt6Core.so.6.11.1 + 0xd02f4)
#2 0x000075fb07128c3e n/a (/app/lib/libQt6Core.so.6.11.1 + 0x128c3e)
#3 0x000075fb070d1924 n/a (/app/lib/libQt6Core.so.6.11.1 + 0xd1924)
#4 0x000075fb07936353 n/a (/app/lib/libQt6Gui.so.6.11.1 + 0x136353)
#5 0x000075fb079efbeb n/a (/app/lib/libQt6Gui.so.6.11.1 + 0x1efbeb)
#6 0x000075fb079f0718 n/a (/app/lib/libQt6Gui.so.6.11.1 + 0x1f0718)
#7 0x000075fb071be7f5 n/a (/app/lib/libQt6Core.so.6.11.1 + 0x1be7f5)
#8 0x000075fb079f463b n/a (/app/lib/libQt6Gui.so.6.11.1 + 0x1f463b)
#9 0x000075fb083afb55 n/a (/app/lib/libQt6Widgets.so.6.11.1 + 0x1afb55)
#10 0x0000575d8dd9f725 n/a (/app/bin/obs + 0x412725)
#11 0x0000575d8da7df8f n/a (/app/bin/obs + 0xf0f8f)
#12 0x000075fb06a2c975 n/a (/usr/lib/x86_64-linux-gnu/libc.so.6 + 0x2b975)
#13 0x000075fb06a2ca28 n/a (/usr/lib/x86_64-linux-gnu/libc.so.6 + 0x2ba28)
#14 0x0000575d8da7f675 n/a (/app/bin/obs + 0xf2675)
ELF object binary architecture: AMD x86-64
```

Found the cause:

<img width="1416" height="212" alt="Image" src="https://github.com/user-attachments/assets/4f3c6621-3480-479d-8186-f229b19ad7ef" />


Launch it from any program that uses desktop files. For example, for me dankmaterialshell and vicinae. Should crash on any?