Ok, I think I found out the problem.
BTW, this also messes up 2d dimensions' orientations as well.
Simply don't mess with "Display editing plane during editing operations only" setting in the "On Screen Options".
If you checked this option, simply unchecking it won't fix the problem. For new files, New & Reset All, and changing this option will fix the problem, but what do I do with all my existing projects?
GS, can you help?
ArchiCAD 25 & 24 USA
Windows 10 x64
Since ArchiCAD 9