This is, unfortunately, a known issue. Jim (the lead OBS dev) has spent a lot of time investigating the issue, and has concluded (for now) that it's either a limitation/bug with Qt on macOS, or some limitation/bug with macOS itself when rendering multiple graphics views in the same window. If it was something that Jim, or any of the active contributors, knew how to fix, it would have been fixed. Unfortunately, software development isn't quite that simple, and solutions aren't always immediately apparent or quickly implemented.
The full details of the issue can be read on Mantis Issue 847. There are a few workarounds mentioned in that issue, like in Comment 3154.
That's the current state of things. If anyone is able to provide any technical insight into the issue, that would be most appreciated.
The full details of the issue can be read on Mantis Issue 847. There are a few workarounds mentioned in that issue, like in Comment 3154.
That's the current state of things. If anyone is able to provide any technical insight into the issue, that would be most appreciated.