🐛 Maximized fluent_ui app prevents automatically hidden taskbar from appearing

[roman-yepishev]

Description

When Explorer shell Taskbar is set to "Automatically hide", apps using fluent_ui maximize their window in a way that prevents taskbar from appearing when the mouse is moved to screen edge where taskbar is supposed to pop up.

To Reproduce
Steps to reproduce the behavior:

1. Enable "Automatically hide the taskbar" in Taskbar Settings on Windows 11, "Automatically hide the taskbar in desktop mode" on Windows 11.
2. Run the example fluent_ui app.
3. Maximize the app window.
4. Move the mouse to the edge of the screen where the taskbar was docked to.

Expected behavior
Taskbar appears.

Screenshots
Taskbar does not appear.

Additional context

When the app is maximized, the thin line showing the taskbar is not displayed (as if the app hinted to the system that is a full screen app). The workaround is to press Windows+T or Windows+B to bring the focus to the taskbar or the notification area.

flutter example app delegating window chrome drawing to Windows DWM maximizes correctly. Tested on the example app and the Shortcut Keeper.

Tested on fluent_ui rev 9c0840 under Windows 10 22H2, Windows 11 23H2 on an amd64 platform with Flutter 3.19.1 (stable).

[damywise]

This is a problem with the plugin window_manager, not fluent_ui

[roman-yepishev]

Indeed, this is leanflutter/window_manager#438.