Steps to reproduce:

1. Setup a Multi-Display environment with the following parameters

## Primary display: 150% scaling
## Secondary display: 100% scaling

1. Change UI scaling in Editor -> Preferences -> UI Scaling to these values

## Uncheck "Use desktop scaling"
## Set "Use custom scaling value" to 100%

1. Launch the Editor with any project on the primary display
2. Open any secondary window, e.g. Preferences
3. Drag this window to the secondary display

Actual results: Window content doesn't fill in the entire window frame and appears "cut off" on the side

Expected results: Window content fills out the entire window

Reproducible with versions: 6000.4.0b2, 6000.5.0a1

Not reproducible with versions: 6000.3.2f1

Tested on (OS): Windows only issue

Notes:

• It seems all secondary window have this issue but only with this specific DPI scaling setup