"open with" detects but does not open flatpaks

[YuchiYonai]

Environment:

• OS: [LMDE 6]
• qView version: [6.1 .deb]

The Bug:
the right click context menu's option to open the current image in a different app shows all image apps including apps installed in flatpaks, however any of the flatpaked apps will not respond when selected and nothing happens.

Expected Behaviour:
When selecting a flatpak app ex: Krita, the option will launch and load the current image in said app.

Note: Tested with other image apps, such as Xviewer and the problem does not persist, Xviewer can open with flatpaks on the same system without issue.

[jurplel]

Xviewer uses I believe Gnome calls to do this—qView has custom code to find applications for "open with" by scanning desktop files. Probably some fault with not finding flatpak desktop files.