It doesn't seem like assets are bundled in tags/releases and are only provided in actions (which expire after some time) so if the user doesn't have the retroarch-assets package installed or has a different version, assets aren't shown properly:
No retroarch-assets:
retroarch-assets 1.7.6+git20221024+dfsg-3 (system package):
retroarch-assets 1.19 manually downloaded from libretro/retroarch-assets:
RetroArch LTS Nightly (1.19.1 Oct 23, 2024)
Devuan 5
It doesn't seem like assets are bundled in tags/releases and are only provided in actions (which expire after some time) so if the user doesn't have the
retroarch-assetspackage installed or has a different version, assets aren't shown properly:No
retroarch-assets:retroarch-assets1.7.6+git20221024+dfsg-3 (system package):retroarch-assets1.19 manually downloaded from libretro/retroarch-assets:RetroArch LTS Nightly (1.19.1 Oct 23, 2024)
Devuan 5