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HarryPotter219's avatar
HarryPotter219
Copper Contributor
Apr 02, 2026

Taskbar Auto-Hide Hover Trigger Buried by Maximized Windows (DWM Z-Order Bug - Build 26220)

I am reporting a persistent and reproducible bug where the Taskbar auto-hide "trigger zone" is physically obstructed by maximized windows. This issue started after a recent Windows Insider update and...
configuration
Features
Update management
Harolder's avatar
Harolder
Brass Contributor
Apr 08, 2026

Given the behavior persists even after explorer.exe restarts and the fact that pressing the Windows key brings up the taskbar, the core issue seems to be related to how the Desktop Window Manager (DWM) or the window layering system handles maximized windows and their interaction with the taskbar's auto-hide feature.