Hidden sub window when window is resized

[Jonas Bülow Knudsen]

Describe the bug
If you click a button that spawns a sub-window (e.g., settings) and you move that sub-window to a new location on the screen, BH will save that location and spawn the sub-window in that same location the next time. If the user has resized the main window in the meantime, this sub-window location might be outside the main window, so the sub-window will not be visible. This is confusing to the user.

To Reproduce
Steps to reproduce the behavior:

1. Open BH in full screen.
2. Click on the 'settings' icon.
3. Move the settings window to the left side of the screen.
4. Close the settings window.
5. Resize the BH main window to fill the right side of the screen.
6. Click on the 'settings' icon -> the setting window is not visible.

Expected behavior
If the last location of the sub-window is outside the current main window, the sub-window should be spawned in the default location.

Screenshots

Additional context
No UI errors.