Okay, so after spending several weeks figuring out how to add custom walls and doors for house customization, Mythic breaks it for me with a patch. Dunno what patch it was, but I was doing a core update. Got everything merged just fine, compiled the new core and was able to log in. Everything was stable, so I committed the update. Now I found out that the custom walls and doors I added are screwed up. When you try to add them during house customization, they "delete" the tile right behind them. So if the wall faces north to south, the tile behind the wall to the north gets "deleted". This makes all the doors and walls invalid placements. I tried adding them manually and noticed that when I placed them, I couldn't walk behind them. So which packet got changed that screwed with the Z level? That's got to be the problem, right?