Rescale Output dropdown options concatenated when Canvas/Output resolution are greater than monitor

[tt2468]

Operating System Info

Windows 10

Other OS

No response

OBS Studio Version

31.0.0

OBS Studio Version (Other)

No response

OBS Studio Log URL

[not provided, too much to have to censor]

OBS Studio Crash Log URL

No response

Expected Behavior

When configuring a canvas+output resolution in OBS which is greater than the resolution of the connected main monitor, OBS should correctly display values in the resolution dropdown for rescale output.

Current Behavior

After performing the reproduction steps, the resolutions provided in the "Rescale Output" dropdown in OBS will be concatenated in some way:

Steps to Reproduce

1. Ensure that OBS is freshly loaded with a profile matching the main monitor resolution, with Output Mode set to Advanced.
2. Open Settings, go to Video, and change the Canvas and Output resolutions to a higher value than the monitor (eg. 3840x2160 for a 1440p monitor)
3. Click Apply
4. Click to the Output tab, and click the "Rescale Output" dropdown.
5. Profit

Anything else we should know?

No response