Issue with screen recording with QuickTime when QuickSync is enabled

When I do a full screen recording, the right side of the screen is black. This only happens when using a scaled resolution (on a 4K monitor in my case). Running at 1080 (non-scaled) has no black bar.

Is this a problem with real macs too? Is anyone else having this issue?

Running at native 4K: https://youtu.be/7y6cSe-cyIg

Running at scaled 1440: https://youtu.be/i1CcSoTjuic

submitted by /u/infernoboyx
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