There have been a couple issues with Lumetri via adjustment layers that I've seen here, not sure if this is part of that. I can't replicate this.
You tweaked something ... what was it you tweaked, and how much? If you go through the panels, has anything changed settings to show this movement?
Hello there Neil, when I tweak anything it does that. In this case it was simply sharpening but if I reset it, it returns to normal. Any change, saturation, vibrance, intensity, it's been frustrating really.
If it helps, I am using Windows 10 Pro, version 1803. I also suspect it might be related to a crash that occured a couple hours before.
And it only does this when used on an adjustment layer?