Touch controllers showing up but provide no input

Hi everyone,

I am currently developing an application in Unity 2019.1.10f with Oculus Utility 1.38.1 with a Rift S but in the end it should run on the Quest.
Now, both touch controllers show up and are tracked in the Unity game view but they don't provide any input to Unity if I press a button. If I build and run it on the Quest, my Quest controllers work..

What can I do? It's really annoying...

Thanks in advance