align to edge function not stable

Hello,

I have a situation where I have a lot of very detailed drawings, and on most of them I have some dimensions aligned to edge with the "align to edge" function.

Problem No.1:

When aligning the dimensions to edge - they always disappear when I click align to edge and choose an edge. They, then, reappear when I press Rebuild.

Problem No.2:

when I reopen the drawings almost all the "align to edge" dimensions find themselves not aligned to the edge but all over the drawings...

I always rebuild and save the drawings, but the problem persists.

What could be the problem?

Best Regards,

David

SolidworksDrawings And Detailing