Japanese Unfinished Buildings Aren't Visible

Just played a match on Mountain Pass against Japanese AI on hardest (Map Seed 24aae0c2). We had to utilize the sacred site victory to get the win because there were no visible Japanese units or buildings left to destroy to get the elimination victory. Upon reviewing the match video afterwards, I discovered that they had 4 buildings under construction that were not visible to us during the match, and as a result we could not destroy them to get the elimination victory.