[BUG] Fullscreen while maximized causes window to not resize correctly

[mellobacon]

Describe the bug
When the app is maximized and you attempt to go fullscreen, the windows taskbar disappears as it should, but the window does not extend fully and leaves a black border/blue bar around the window

To Reproduce
Steps to reproduce the behavior:

1. Maximize the window
2. Press F11 or press the fullscreen button in View > Fullscreen
3. See error

Expected behavior
The window should go to fullscreen correctly. Fully extended across the window, no weird artifacts.

Screenshots


Desktop (please complete the following information):

• OS: Windows

Additional context
While the window is not maximized, making the window go fullscreen works just fine. If the window is using a native titlebar (Nucleus uses a custom titlebar via css), fullscreen works whether the app is maximized or not, as expected.