Stereo Out channel: Volume fader moves on its own?

Good day. I wonder if you can help me. I have bought the new version of Cubase 15 Pro and it worked perfectly. But after the latest update my Stereo Out channel’s volume fader moves on its own and at random times, even when there is no music playing… I have had every Cubase from 5 until 15, but I do not know how to fix this… Any suggestions? *I work on a Macbook Air.

Hi,

Inspect all your (MIDI) Remote Devices, please.

Could you attach a screenshot from the Studio > Studio Setup > MIDI Ports Setup, please?