PC [BUG] 3-player split screen co-op: unrendered section of top view on Steam / macOS

[scpeters]

Hi, thanks for adding split-screen co-op; I've been really excited to try it with my kids. I got 2 controllers plugged in and set up a 3-player co-op game with a wide view on top for the primary player and 2 views underneath it (see attached screenshot). I've noticed that there's an unrendered section of the top view for areas that are large enough to use the full screen width, which shows up as a black box on the right side of the screen. The time and money heads-up display is rendered properly over the top of it, but my character disappears if I walk into the black box (or walk out my front door, since that is in the black box).

I'm playing with Steam on macOS Catalina (10.15). I believe my screen resolution is 2560x1440 (based on the size of my screenshot). Let me know if you need more information.

Thanks!