I generally do not submit trouble like this to tech support until others have the same problem.
I would not try this in a valuable drawing.
In fact, normally the problems happens early on so anyone can recreate this in little time.
After creating walls and dimensions try Block Moving the entire building with cursor lock off and moving in a x and y direction (random angular direction).
Many times some of the dimensions are off by 1/32 with opposite side of building.
If this happens, now try correcting the problem.
1. Remove extension lines of bad dimension, then re-dimension. Did this fix it?
2. Adjust wall length away and back, then repeat step 1. Did this fix it?
3. Edit wall and make sure angle is not off. If it is correct it repeat step 1. Did this fix it?
Can anyone else recreate this issue?