I've noticed this with elevations/sections if I've mirrored / moved them after the first time they were placed, but that's been since it was introduced first in ArchiCAD13/14?? (been a while!), as far as I remember.
Sometimes it looks like it's off by like a pixel, but that's just the way to show the elements of original/trace, I think.
Erwin Edel, Project Lead, Leloup Architecten
www.leloup.nlArchiCAD 9-26NED FULL
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