Files are 2018.
2018-1 is the Master Sketch.
2018-2 is the Part from Master.
You can see 2018-2 is off center.
Edit the feature and you can drag center point of the circle around.
Edit Master and part will update.
I tested it both on 2018 and 2019.
John Stoltzfus please check if similar thing happen with SSP.
Already sent to VAR.