Shortcut Shift+M no longer works (mute tracks)

[Louga]

Hello, the Shift+M shortcut to mute tracks no longer works. I tried a lot of things, unchecked the az icon, no shortcut in my mac keyboard settings has this same shortcut.. If you have any ideas, thank you so much !
Best regards

Denis

Protools Ultimate 2021.3.1
Mac OS Catalina 10.15.7

[albee1952]

I think its Ctrl+M(on Windows) and maybe Cmd+M on a Mac When in doubt, read the manual

[Louga]

Thanks for your answer, theoretically it's Shift + M, but I also tried cmd + M, which doesn't work either. I tried assigning another shortcut to the command in the keyboard settings, that also doesn't work, thanks a lot

[BScout]

Works here. (Shift+M)

Might want to check in keyboard settings if something else has Shift+M in use.
(but also on 2021.6)