Double clicking very top of File Explorer window does not expand window

[Chuckie2]

Describe the bug

In Windows 10 and 11 (and maybe before) when double clicking the very top edge of most program windows (when the double ended arrow appears) expands the window vertically. It does not maximize the entire window horizontal and vertical, only vertical. This is currently not working on File Explorer windows on my two Windows 11 computers and Classic Explorer is the only thing I can think is causing this. This works correctly on other programs on the computers so I don't believe it's a system wide Windows setting misconfigured. I tried to disable Classic Explorer from starting with Windows but don't see anywhere to do that short of uninstalling it. Classic Shell start menu has the option to start or not with Windows but disabling that doesn't seem to effect Classic Explorer.

Area of issue

Windows Explorer

To reproduce

1. Open any Windows file explorer window.
2. Double click the very top edge of the window when you see double ended arrow.

Expected behavior

Window should expand vertically but there is no change. Maximizing the entire window works when double clicking in the actual top bar, not expanding vertically when clicking very top edge of window though.

Open-Shell version

4.4.196

Windows version

Windows 11 25H2

Additional context

No response