Everything was fine… right hand fist was always the “trigger” command.
Suddently, the command does not pass to SteamVR. So no menu controls are possible in VR.
Checking the gestures says Fist (right hand) Yes when you make a fist and No when you don’t. Movement of the hands is totally fine.
So… WTF?!
Thanks for your help
Additionally I added a VR-Park via Bluetooth and mapped a button to the right hand trigger. I can see it working but the command is not pass through SteamVR. Did I ran into some update issues?