Thane, it could be that there is not a peg, compression is all that is needed at that point. Or a blind hole, we are looking at the non reference face It is hard to tell but is there a mortice showing on the bottom of the tie just to the inside of the post?

It looks like the top plate may be rolled a bit, but it is still reasonably close at the bottom to the plate next to the post. What does the post look like from the reference face, the door side?

Tim