Adding AppImage type app to the auto-set Caffeine list doesnt work

[Mohd Yusuf]

I added an AppImage, specifically Minecraft Linux launcher:
https://mcpelauncher.readthedocs.io/en/latest/getting_started/index.html

I have moved the *.AppImage into the general application folder to make it appear as any other app available to Gnome.

I tried adding Calculator to the auto-set Caffeine list and it worked. Just not the AppImage.