Right Mirror Doesn't update properly in Multi-Monitor Rendering

I am driving the Garvil T-Series and the right mirror only updates depending on the rotation of the vehicle. But the mirror doesn't update when the vehicle is translated across the map. The mirror gets updated as soon as the camera gets moved just slightly by the user but still only responds to rotational movement as if the vehicle hadn't move from where it was last updated. This results in the mirror turning black when the vehicle is rotated to a position that wasn't rendered when the mirror was last updated.
Here's a video showing the issue.

 

BeamNG 3-screen support sucks, everything is broken. I recommend using the windowed / borderless mode instead.

 

I mainly just tried it to see how it was. The thing with Windowed Borderless is the sides get really stretched. But, it was more of a "What's this" moment.