What to do when the Mac Dock keeps moving to another display
If your Dock moves to another display after an edge gesture, or interrupts presentation and full-screen work, this guide explains Dock keeps moving, Dock moves display through a multi-display Mac setup.
Dock keeps movingDock moves display

What to do when the Mac Dock keeps moving to another display: direct answer
A Dock that keeps moving is usually tied to edge gestures, display layout, and full-screen workflows, so start by recording triggers.
Decision: Dock movement between displays is commonly triggered when the pointer reaches another display's bottom activation area. Record display geometry, Dock position, and the exact pointer path before choosing a fix.
Steps for What to do when the Mac Dock keeps moving to another display
- Map the left/right or above/below display arrangement and record the main display and Dock edge.
- Without the utility, reproduce three to five times and record pointer path, full-screen state, and frequency.
- Enable DockLocker, grant the required permission, and repeat with the same layout and pointer path.
How to verify the result
- Trigger counts before and after are comparable and Command-Tab, full-screen, and display switching gain no new conflict.
- Retest after sleep/wake, reconnecting displays, and restart instead of relying on one session.
Limitations and stop conditions
macOS imposes its own display-geometry and Dock-placement limits, so no utility should promise every arrangement works.