I think it is file type depandant.
This sample is dng file created from Sony RX100m2 arw file.
As I investigate - similar, but smaller shift without rotation is with RX100m5 file.
Target is little larger in horisontal dimension on both sides.
And when file is from RX100m7 target is little smaler than white outline opposite to anchor point.
I’m not aware of anything that would alter the shape of local adjustment masks. But a number of people have been asking for masks to change shape and position if the underlying image also changes shape and position. Could DxO be experimenting with this?
Did you apply geometrical adjustments to the image after cloning, such as Perspective correction, Horizon/rotation adjustment, or Distortion correction? Or does the cloning action immediately produce a correctly-shaped mask with distorted changes to the image (as your screen capture shows)?