First noticed this attempting to install BONELAB Fusion, where Lemon Loader could not reinstall patched BONELAB. I have been unable to install any applications from any APK source inside the headset, be it something like F-Droid or Lemon Loader, like...

Very similar to this issue.Tried cleaning with alcohol, removing battery, stuff like that. It's only happening on the left controller, and I would prefer not to need a replacement, because I don't really have the money for that.