Yes, same thing happens here on XaraX 1.1

If you covert the new mold to editable shapes, ungroup and break the shapes apart, you'll find that it is built up of many small shapes forming the outlines of the original shapes.
Undo back to the mold and save. Reopen and perform all the steps once again and you'll this time find that it is built up of 9 closed shapes just as you would have expected in the firts place. Bug, glitch or feature???

/Ronny