If you move it later (pan\crop), then "colored traces" remain.
@gorGaram ... could you please screenshot the 'CGP before Pan/Crop' that you are getting highlighted with an arrow or the like the color traces that you are seeing. Using the CGP before pan/crop, I'm not seeing any color traces in Preview to Best quality in the preview window.
Upper to the left, lower to the right, traces of painting are visible.
There's something else going on in this pic of yours, those images looked cropped..? Can you show a full screen video of what you're doing inc moving color grading to the other side Pan/Crop.?
This is without Track Motion & there is def no bleeding.