Noticed the same bug while going through old replays. Post-update match replays seem to be fine, but the old ones are broken the same way capaych showed. This is what the console shows while the replay is going.
Old Replays are bugged again. It's probably going to be the norm since the game uses .dem files. Since it is not a video, but the information and instructions for the game to recreate the match. Therefore, the replays will mess up because the patch to the characters are all different? Just a guess.