Playing on the hive city/manufactorum map type on a purge mission. Had two sets of glitching through the floor on a walkway/ next to/on one of the round sections involving a sorcerer and myself being near the edge (and also the purple teleport things they do) and the Leman Russ glitching through the floor at one point to the floor below.  Have also had a somewhat similar issue doing an infestation mission where the warp gate relays were not visible until destroyed.