We just ran into an issue where our presets for the Safe Color Limiter from earlier versions of MC are treating the image differently in 8.5.2.
Specifically the Luma L setting. It defaults to 7.5 (which in retrospect is odd) but in the MC 8.4.5 does not affect video levels at 0 ire on a digital scope.
Now, this same setting in 8.5.2 clamps lower video to 7.5. In fact what you would expect.
It is almost as if someone realized that the effect was not working as it should and "fixed" it. And no notice was given. This is just a guess.
But this really screwed us on a big job. Hope this helps someone .....
BTW, we checked this on multiple machines. All Macs.
Jef