[Deckert]

You and your contractor should have had the door picked out and planned for before the tiling began. At a minimum, a print out of the shower door details should have been present (which would give the opening size to leave, etc).

Not saying its your fault or his fault. Just saying that if the door hadn't been chosen and the specs for the door weren't on site, how would either of you know what to build to?

As far as solutions go, you could build the jamb area out with a strip of tile that is double bullnosed or something like that. Even a strip of slab that is beveled on each side.