Take Screenshot creates image with wrong resolution

[Ontwikseltsaar]

When taking a screenshot of OBS' Windowed Projector, the dimensions of the image are incorrect (472 x 239 instead of 480 x 270).

Upon loading the settings file and selecting the Windowed Projector window, it seems the parameters of rect are
bottom: 270
left: 8
right: 480
top: 31
And after I readjust the X and Y values using the arrows in the spin box (8 to 7 to 8, 31 to 30 to 31):
bottom: 301
left: 8
right: 488
top: 31

Reproduced as follows with the attached settings file:

1. Load settings.
2. Select window (Windowed Projector (Source) - Game).
3. Take Screenshot (472 x 239).
4. Use the arrows in the spin box to adjust X to 7 and back again to 8, and Y to 30 and back again to 31.
5. Take Screenshot (480 x 270).

settings.zip