Mac OSX matinee won't record, just results in .mov video with blank screen

So I’ve tried every which way to do this, MatineeActor is set to play on level load in Blueprints, Play on Level Load is ticked, keyframes are set, and shows up fine on Movie Render Preview, the problem is that the exported .mov file is just a black screen.

I’ve tried this across a range of projects, even one which wasn’t made by me and exported well for others, but still has the same result.

Is this a problem with quicktime? Or ue4 on Mac? Or am I missing a really obvious box that should be ticked somewhere?

Many thanks for any help that can be thrown my way.

This is a known issue and will be fixed in 4.12.

Well, that makes me feel better. I thought I was being a moron.

Thanks for the feedback!