Pressing Cmd-ScrollLock puts monitors into mirror mode

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Question

I have 2 external monitors connected to my M1 Macbook Pro as extended desktop.

When I run MonitorControl 4.2.0 and press Cmd-ScrollLock on my external keyboard, my monitors switch into Mirror'ed display mode. So I end up with 2 monitors which mirror the primary screen. To get out of mirror mode, Cmd-ScrollLock will put it back in Extended Desktop mode.

I've looked through configuration options to see if I can disable this somehow, but do not see anything.

1. Is this a setting that is configured by MonitorControl
2. Is there a way to disable/remap this key configuration

I am not convinced that it is MonitorControl which is causing the displays to switch to Mirror mode, but if I quit MonitorControl, then pressing Cmd-ScrollLock does nothing.

Any suggestions would be appreciated.

Thanks,