For some reason, Window Capture, while it works, offsets anything captured from the top and left side of the video by a good chunk and chops off the bottom and right hand side as well. I've tried different window sources, and all have the same problem. I'm running version 26.1.2 on iMac Catalina (27in late 2013) and attempting to screen record at 1080p 30fps with default settings.
Here's an example from a Remote Desktop session - Notice the top and left have large black space - this happens no matter where the window is originally (rebooted as well).
Here's an example from a Remote Desktop session - Notice the top and left have large black space - this happens no matter where the window is originally (rebooted as well).