Patch 1.36.1 used the Hammerfall map version 800, patch 1.36.2 is now using the map version 737
Its not just Hammerfall that is wrong. Tidehunters is also the wrong version. I have the feeling they somehow have the wrong configuration for map pool loaded or something. The maps in 2v2/3v3/4v4 are also really old ones for some reason