Your system information

Steam Machine

• Steam client version: latest beta
• SteamOS version: 3.8.25
• Opted into Steam client beta?: Yes
• Opted into SteamOS beta?: Yes
• Have you checked for updates in Settings > System?: Yes
  I use the SteamRT3 client

Please describe your issue in as much detail as possible:

I have a flatpak non-steam game added in my library, it uses SDL3 for controller support.
When I launch it I have a controller profile that enables trackpad to mouse functionality plus back buttons for convenience, it's based on "controller plus trackpad mouse"
Everytime I relaunch this app the controller profile is reset to "controller plus trackpad joystick", and it's usually reset to a custom version of that profile i had previously made with back buttons. But I've since deleted that profile, yet it recreates it on start again and never remembers to set the proper mouse+trackpad profile I've made, even after setting it every time

Steps for reproducing this issue:

1. Add non-steam game
2. Make custom controller profile (Potentially two, one to use originally to "reset" to and one you actually want)
3. Launch the app from game-mode and set controller profile to the custom one you prefer
4. Quit app and relaunch
5. Observe your controller profile is not what you had set previously