Linux Mint Cinnamon - Failed to load module "xapp-gtk3-module"

[FluffyOMC]

Occurs when launching Obliteration after freshly installing the flatpak, leading to the application to being on light mode instead of following the gtk theme.

[FluffyOMC]

Icons show that Qt knows it should have dark mode, but it can't fetch the GTK themed colors.

[FluffyOMC]

@ultimaweapon Just saying, FTP worked properly on Mint! No limit error.

[ultimaweapon]

Try https://askubuntu.com/a/1417077.

[FluffyOMC]

The following packages have unmet dependencies:
 xapp : Depends: libxapp1 (= 2.2.8-1) but 2.6.1+victoria is to be installed
E: Unable to correct problems, you have held broken packages.

[FluffyOMC]

Aptitude believes that this can only be resolved by downgrading or deleting Cinnamon, the main UI.