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Re:Show HN: DockFlow – Switch between multiple macOS Dock la... by matthew-wegner on Thursday May 22, 2025 @04:32PM (#44066591)
> that changes randomly

Moving the mouse pointer to middle of bottom edge of a screen will permanently move the Dock there. As far as I know, there is no way to disable this behavior. It's terrible.

For simultaneous multi-monitor, you're probably forced into using a full Dock replacement. There are a few options out there, but none have ever stuck with me personally.

Re:Show HN: DockFlow – Switch between multiple macOS Dock la... by chedabob on Friday May 23, 2025 @03:04AM (#44070581)
If you go into System Preferences and disable "Displays have separate Spaces" it'll keep the dock and app switcher on your primary display.

I'm not a Spaces user so not sure what impact this has outside of the dock behaviour.