I feel like the enemy AI pathing is currently bugged.
Had several ratling gunners either getting stuck or shooting into walls.
Stormvermins walking through walls.
Blightstormers standing behind a wall and summoning a storm (they were recently patched to have line of sight on the player before summoning storms).
Hookrats getting stuck and not moving. Despite walking up to them, they essentially just broke down without ever fixing itself.
Assassin rats on ledges trying to drop down causes them to do so in slow motion making it incredibly easy to kill.
Assassin rats just standing and not moving.
Assassin rats pounce towards a player then flies upwards into oblivion.
Hordes getting stuck and just staring at us.
Hordes on the War Camp climbing up on the cliffs and then dropping down on the other side despite my team and I being directly in front of the horde with no obstructions in sight.
These are just some of the things my friends, random players that join us, and I have seen since the Engineer patch came out. Normally, these issues would be considered lag and only be viewable as client but everyone saw it, including the host.
EDIT: adding screenshots as the above events happen again.