CC Vignette bugs
Found a very easy way to replicate buggy behavior with CC Vignette.
1.Put any image or media in the timeline
2.Create an adjustment layer on top of it and add CC Vignette.
3. set a couple position keys on the adjustment layer and animate it.
4. You should see lots of strange behavior on the layers beneath the adjustment layer.
I ran into this issue lots when working with full-screen comps that had to shift over to split-screen.

This issue was fixed as part of After Effects 17.0. Please let us know if you continue to see any unwanted behavior.
Cheers,
- John, After Effects Engineering Team
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Hi Mike,
Thanks so much for filing this report. I'm able to see the same issue and we'll have our team take a look.
Cheers,
- John, AE QE