Compatibility Report

Subject: Wild Hearts (App ID: 1938010) stuck in top-left tiny window resolution loop on Steam Deck
Issue Description:
When launching Wild Hearts on the Steam Deck, the game successfully passes the EA App verification, but immediately upon booting the actual game engine, the display collapses into a tiny, microscopic window in the top-left corner of the screen. Audio plays normally in the background, but the video pipeline fails to scale or maximize to full screen.
We have thoroughly verified that this is a display context conflict between the game engine's video pipeline, the EA App container, and the Gamescope compositor in Gaming Mode. The game runs successfully in Desktop Mode at 1280x720, but the saved profiles fail to migrate or bind properly when returning to Gaming Mode.
Troubleshooting Steps Attempted (All Unsuccessful in Gaming Mode):

1. Launcher Cache Purge: Cleared and deleted Proton files via the Steam Developer menu to reset the EA app container.
2. Compatibility Layers: Verified across Proton Experimental and multiple recent iterations of GE-Proton (GloriousEggroll).
3. Hardware Constraints: Increased the UMA Frame Buffer Size in the Steam Deck BIOS from 1G to 4G to rule out VRAM initialization deadlocks.
4. Launch Parameter Overrides: Attempted multiple launch arguments including:
   • -screen-width 1280 -screen-height 720/800 -fullscreen
   • -windowed -noborder
   • PROTON_NO_FSHACK=1 PROTON_FORCE_WINDOWED=1
   • gamescope -w 1280 -h 720 -H 800 -W 1280 -F fsr -b -- %command%
5. Display Compositions: Toggled system-level Scaling Modes (Stretch, Fill) and Scaling Filters (Pixel, Linear, FSR) via the Quick Access Panel (... menu). Gamescope overrides result in either a frozen, spinning Steam loading logo over the background audio or an automatic virtual keyboard popup deadlock.
6. Input Intercepts: Mapped physical grip buttons to keyboard macros (Alt + Enter) to force window maximization via the Linux manager. The game engine actively rejects the focus call.

Please investigate the Gamescope window focus mapping for this specific title under the current SteamOS build, as the title remains entirely unplayable in Gaming Mode due to this resolution constraint.