Hey ChristianMaund,
I’ve been having the same issue happen to me today except I’m working with the Oculus Quest. and the Oculus Source code version of unreal.
I found the only way to get them working again is to close down the project. Open the project files and delete my DerivedDataCache, Intermediate and Saved files from the project and then open it back up. Then my inputs work again. It’s not exactly a permanent fix but its a solution for now.
Hope this helps.