I just watched the last few seconds. It looks like the game clock ran out before anything happened, and there was no time left in the half at all when the "shot clock violation" message appeared. Running out of time on the game clock is equivalent to running out of time on the shot clock (at any other time during the game), so the message in the game report seems fine to me.
It is a bit odd that there were substitutions with no time left in the half, but this is just one of the strange quirks of the game engine.