When trying to sit on a Bibliocraft seat, the player is offset by a couple blocks.

Also, sitting on Decocraft stuff usually makes the player crawl, though I don't use it anymore, so I don't know if it's been fixed.

This has bizarrely started working correctly for seemingly no reason. Weird. It isn't direction dependent either. Maybe another mod was interfering with something and breaking things.

It might be another mod conflict because 1.0.4 does check if the player is sitting or riding something. If the mod doesn't use that for sitting then its something I will fix in the future