Inreresting post. My two cents is that if a Contractor feels something is missing or wrong, he should definitely submit an RFI or otherwise ask the question. Its true that Contractors sometimes do not understand what drives parts of the structural design (especially concerning lateral loads, I believe), but I think there is no harm in listening to questions or comments about the design from the field. However I wish they would come while everything is still on paper, and not in the middle of construction. My impression is that builders rarely go through the drawings thoroughly before construction (This is not a criticism, there may be many reasons for this) and when questions do come about how something was done or if something was missing, they always seem to come during the building phase.
Getting back to the original post, there are several ways to get the shear in the edge of a roof deck diaphragm down into the resisting element besides using a continuous angle. The deck can be wrapped down over the joist ends using bent light gauge and attached to the block (You probably want a continuous bond beam in the wall just below this), or if the loads are light enough perhaps the rollover resistance of the owj connection cited in one of the posts will be enough.
From a practical perspective, attaching joists to block without a bearing plate or other embed can be difficult to have done properly, imho. So if the angle is not requested on the con docs, a different load path needs to be considered. Is it too late for that? Is everything up?
Regards.