Here there is no reason why brickwork should not go neatly over door head without infill. Here is example photo taken at one of my pre final inspections
http://i1321.photobucket.com/albums/u559/brankom10/DSC_0130_zpsmgkrj06t.jpg
If building designer does a good job then everything will fit
If builder makes sure all windows and doors are in correct position then everything will work bricks
If bricklayer works out his brick rods then you should get what is in the photo above
None of it is rocket science, missing element? Care.