Incorrect picture used as miniature when importing into Steam

[christophehenry]

Describe the bug
When importing games into Steam, the wrong miniature is used in Steam.

Steam seems to use <appid>_bigpicture.png instead of <appid>-icon.png on the game's properties dialog and the games list aside. Example here with Mumble:

This is the contet of the generated shortcut.vdf:

�shortcuts��0��appid�њ‚ку�AppName�Mumble��Exe�flatpak��StartDir���icon�/home/deck/.steam/steam/userdata/<user_id>/config/grid/4092232348_bigpicture.png��ShortcutPath���LaunchOptions�run info.mumble.Mumble��IsHidden������AllowDesktopConfig������AllowOverlay������openvr������Devkit������DevkitGameID�boilr��DevkitOverrideAppID������LastPlayTime������tags�����

And this is the content if I replace the icon with the correct <appid>-icon.png with the app settings dialog in Steam:

�shortcuts��0��appid�њ‚ку�AppName�Mumble��Exe�flatpak��StartDir���icon�/home/deck/.steam/steam/userdata/<user_id>/config/grid/4092232348-icon.png��ShortcutPath���LaunchOptions�run info.mumble.Mumble��IsHidden������AllowDesktopConfig������AllowOverlay������openvr������Devkit������DevkitGameID�boilr��DevkitOverrideAppID������LastPlayTime������FlatpakAppID���tags�����

To Reproduce
Steps to reproduce the behavior:

1. Close Steam
2. Select one game to import in BoilR
3. Click the "Import games into Steam" button in BoilR
4. Open Steam and notice that the icon used in the games list aside and the dialog button is not the correct one

Expected behavior
BoilR should generate shortcut.vdf using the <appid>-icon.png instead of <appid>_bigpicture.png

Desktop (please complete the following information):

• OS: Steam Deck
• BoilR Version: 1.9.6 (from Flatpark
• Launcher: none (desktop mode of Steam deck)

[christophehenry]

This seems to reproduce only when using the "optimize for big picture" mode. Althought I don't see the gain of this option since it doesn't change anything else than the icon when unticking this option. This may be a feature I don't understand but it really feels like a bug.