rekordbox performance mode issue / midi falls out

Hi everyone

I Use a XDJ-RX with the latest Firmware (2.21) and Rekordbox under performance mode (version 6.6.3) under OSX Montery 12.3.1 with a MacBook Air 2019

Since few Days dropps the Midi completely out when i`m opening a Browser (Safari , Chrome) and the Controller doesn't work anymore.

When i activate the Export mode and re activate the performance mode and push both arrow buttons to activate the midi works all fine.

i have reinstall the Mac, but i have the same problems again. that's not so funny :-(

have anyone a idea!?

best regards