@RJK... SC2HDo is based on the EUROPEAN (PAL) version of the game. A version which is so glitchy that even back in the day, the Europeans didn't use it during major tournaments. The PAL version is technically the most recent version, so thats the version they used for the HD port. Unfortunately it includes arbitrary balance changes, some new glitches, and expanded clash/break windows (which you saw at 3:19).