Yeah got the same Problem, also with WMOs from Kezan.
Tried version 3.0.1, 3.2.0 and with client version Cata 4.X, Legion 7.1.5 and Legion 7.3.5 everytime i try to fly around Gilneas or Kezan it crashed, but when i delete all WMOs in Noggit the Maps work just fine.
Edit: One of the broken WMOs is Gonlin_PoolWalls.wmo