Bug or wanted?

I have the problem that on an audio track the Solo button sometimes becomes a symbol that I don’t understand. What is that? When this symbol appears I can’t switch to Solo.
Best regards

Bildschirmfoto 2023-12-09 um 20.10.13

Hello, this is the solo defeat, i.e. when activated, the track is not muted when we solo others. It’s activated using a long click (or alt+click) on “solo” and deactivated the same way. These shortcuts were to the mixConsole and in CB13 are also in the project window.

Thanks a lot! It works.