Hey, thanks for the report.
This is a regression. The same issue was fixed before, but it looks like it came back in version 2.3.29. The keybinding Cmd+M → Cmd+P for workbench.action.showAllEditors does conflict with the default macOS shortcut for minimizing a window.
I’m passing this to the team to fix. This is a known issue, and the team is working on a fix.