On PC NA.
Olms is occasionally swinging his steam breath sideways after you've rolled out of it. Steam breath is also doing damage far outside of its cone, and is occasionally turning into a giant 360 degree AoE. Random steam breaths are also occasionally popping up sideways when Olms is in the air, wrecking the main tank and tank healer. Olms is also occasionally jumping back down during the middle of Storm the Heavens just to smack people with his tail, and then flying right back up
Felms is occasionally jumping four times. He's also occasionally jumping right next to himself, instead of to the kite healer.
Lothis is occasionally becoming uninterruptable, to the point that at one time 6 members of our team stood in a circle around him all manually bashing him and it didn't interrupt.
I don't think we had a single pull where at least one of these random bugs didn't occur. On some pulls, 4-5 of these bugs all occurred. It became entertaining to see what new ridiculous bug would pop up next. Needless to say, it made the run nearly unbeatable.