rpcs3 [Regression] Mouse in fullscreen not working properly

Quick summary

Sorry for the weird title. The mouse doesn't work properly when using relative mode in fullscreen. This is specifically on the MacOS build. I'm using a MacBook Air M2 8GB.

Details

The mouse doesn't work properly in fullscreen:

Mouse not being locked in fullscreen
When moving mouse up or down, the camera moves right or left.
When moving mouse to the left, the camera goes to the right for a while, after which it goes to the right and vice versa I saw a similar issue (https://forums.rpcs3.net/showthread.php?tid=203982) but there were no answers. I don't remember the build that I was using when it worked because I actually just returned to RPCS3 to play Demon's Souls. I remember the rough time I used it which was around July 2023. Funnily enough, this issue only happens in fullscreen. The mouse works fine (as expected) in windowed mode. It also works when 'Lock mouse cursor in fullscreen' isn't enabled.