Uncontrolled Midi data - Push 1 Bitwig 5.1 beta 9

[Hörschwelle]

Hello,
I have installed the extension 21.5.0.
Since the last update to Bitwig 5.1.Beta 9, the pads on my Push 1 are going crazy and sending midi notes. Everything flickers.
On every track I select.
If I start Bitwig 5.0.11, everything is ok.

Best regards
Guido