DirectX 9 display scaling bug

[PkR]

Hello, since the bug box isn't working I'm posting here. When "Resize display to fill window size" is enabled, display size isn't scaled correctly even when the resolution is suitable for integer scaling.
The issue only happens in DirectX 9 mode. DirectX 11 mode appears to scale properly without artifacts.

Example MFA:
screensizeissue.mfa
Artifacts in DX9 mode at 2X:
scaledx9.png
No artifacts in DX11 mode at 2X:
scaled3d11.png

This was reported back in 2016 and is still an issue. Original thread:
https://community.clickteam.com/threads/98543-Game-doesn-t-properly-fill-window-size-when-full-screen

Please look into fixing this, thanks for your time.

EDIT: Related https://community.clickteam.com/threads/82240-BUG-Pixel-perfect-scaling-does-not-work-in-DirectX-9

[NaitorStudios]

I have made this workaround.

[PkR]

Will have a look, appreciate it.

It does seem to work, thank you for the workaround. I hope Clickteam figures it out on the runtime's side, seems like an extra pixel is added with each multiplication?