OverlappedPresenter.IsMaximizable should disable extended title bar double clicking

[dongle-the-gadget]

Describe the bug

Currently, OverlappedPresenter.IsMaximizable would disable the maximize button, but it doesn't disable extended title bar (AppWindowTitleBar.ExtendsContentIntoTitleBar) double-clicking to maximize, which would result in the window hiding the taskbar.

Steps to reproduce the bug

Add this code, double click the window title bar and observe the window being maximized, hiding the taskbar.

// Initialize _appWindow.

// Enable extended title bar.
_appWindow.TitleBar.ExtendsContentIntoTitleBar = true;

// Set maximizable to false
OverlappedPresenter presenter = _appWindow.Presenter as OverlappedPresenter;
presenter.IsMaximizable = false;

Expected behavior

The window shouldn't maximize when the user double clicks the title bar and IsMaximizable is false.

Screenshots

No response

NuGet package version

Windows App SDK 1.4.0: 1.4.230822000

Packaging type

Unpackaged

Windows version

Insider Build (xxxxx)

IDE

Visual Studio 2022-preview

Additional context

No response

[BreeceW]

Regarding “Might require AppWindowTitleBar.ExtendsContentIntoTitleBar?”

If the app does not use extends content into title bar, this issue seems to reproduce only if the XAML Hot Reload toolbar is enabled and showing (i.e., debugging in Visual Studio).

However, if the app is extended into title bar, then this issue does reproduce regardless of the Hot Reload toolbar and amounts to a usability issue.

[dongle-the-gadget]

I'll update the issue, thanks

[bpulliam]

Duplicate of #8666