HIDPI Gala ignores scaled size of Wingpanel when maximizing a window

[teamcons]

What Happened?

Maximized window takes up the space as if Wingpanel was normal size

Issue from https://github.com/orgs/elementary/discussions/617 (more details there)

Steps to Reproduce

Set a higher scaling
maximize window

Expected Behavior

Maximized window respects Wingpanel's new size

OS Version

8.x (Early Access)

Session Type

Classic Session (X11, This is the default)

Software Version

Latest release (I have run all updates)

Log Output

No response

Hardware Info

Issue both on Macbook Pro and standard external display

[immutable-pro]

This also happens in the Wayland session (Secure). Attaching screenshot:

[spin-locked]

The scaling is also somewhat misinterpreted when triggering the context menu in the desktop. I have 6K display with scaling factor set to 200%, and the context menu does not open where the cursor is (it's off, seemingly by factor of 2 from the top left corner). When using scaling factor of 100% everything seems to work well.

[lenemter]

Fixed in elementary/wingpanel#601