Static game footage when recorded on fullscreen specifically

[PolitoY]

Hi, so while trying to record my Pokemon Platinum save on MelonDS with OBS, I noticed that, when entering the built-in fullscreen mode, the game footage is static even when I actually move. The audio is still recorded as intended tho.

I first checked if it was a Pokemon Platinum issue, so I tested with another game : same issue with the additional discovery that the record goes back to normal if I quit fullscreen mode mid-recording.
Second theory : maybe it's just an OBS issue, let's try another app. So I grabbed Citra and tried to replicate the same scenario. No problem at all, it worked perfectly even on fullscreen.

Here the recordings of my experiments (sorry Github doesn't support mkv files) : https://www.swisstransfer.com/d/257076cc-3e8c-47da-801d-c702287a886c

So I guess it's really a problem on MelonDS-side ? And also thanks for reading.

[PolitoY]

The record works when using the software renderer, so it seems like an issue with OpenGl (both versions). I tried messing with the the few OpenGl settings but it didn't have any effect.