I was playing around with constraint and notice a bug
Draw a simple slab
draw a block shape constrain the corners using the coincident constraint
Test the constraint by changing the size of the slab and it works
Take that shape and project it to a new solid.
Test the constraint again and it works.
Modify the is a slab in any way and the coincident constraint is lost. Sometimes on all points and sometimes a couple.
This is just like the annoying associating dimensioning with solids. You modify the solid and all dimensions lose association.
I suppose there is not a quick way to fix the broken constraint.
It would be nice to select the solids with a fence or the select tool and either use auto constraint or choose the constraint that was lost.
