I’m not seeing this behavior? Skip controller with gamepad project settings still don’t appear to be working in 5.3 binary (launcher)
Edit: Nevermind I see now you were talking about the custom viewport code class… the forum has a strange way so showing replies.
For anyone interested in a well documented mapping system I did find this when searching for any PRs related to the Skip Player 1 bool
Add functionality to map devices to player controllers by KristofMorva · Pull Request #5209 · EpicGames/UnrealEngine (github.com)