Transform Y position yields tiny gap on rt side

I noticed when I do a Transform adjustment to position Y in the clip inspector, there is a sliver of a gap created on the right side of the frame. I wouldn't have noticed it except for a clip underneath this one was of a lighter color. No other scaling/sizing/zoom adjustments are made on this clip.
Input scaling is set to "scale entire image to fit".
These source clips are 6144x3160, viewed on a UHD timeline, output blanking to 2.39. If I don't touch the transform there is no gap.

C

In what format are the clips? If they’re RAW, I wonder how debayering quality might affect this.


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That was it - On full res decode it went away, anything under that and it re-appeared. Thanks!

C