Hello Udo and Hello Dumitru,
Another secret is out - dimensions and labels moving again:
All default database for AS2018.
ZERO customization, using very powerful Autodesk certified video card / workstation.
The only thing that was changed was bolts diameter and distance to back of angles.
Dimension chain on the left moved with no reason.
I am also attaching the test model and folder.
Regards,
Ilko Dimitrov