I think threads are intended for fully reproducible bugs, but I don't know if mine is that so I'm just posting here since I haven't seen anyone else say they're in the exact same situation. For reference, Sessha is within the burrow referenced in Harris' thread here.
Most of the time, attempting to log on to this character results in behavior exactly like Harris' (booting to the login screen; being unable to click the ladder to ladder out).
Two times, I have successfully logged on to Sessha. However, they cannot do anything other than walk around; they are unable to climb counters, pick up objects, leave the burrow, lock the burrow, put out candles, open doors, close doors, sit, or sleep (whether by mouse click or function key; I know other characters can't sleep with a mouse click, but can sleep when pressing the function key). They can 'look' at objects, but cannot 'open' objects such as bookshelves, display cases, or the deposit box. Also, their inventory is listed as containing 10 items with a weight of 23, but none of said items visually display in the inventory (and the furniture keys don't work, but that may just be because Sessha can't open objects in general; idk). The first time was shortly after the server re-opened and the second time was just now; since the situation was identical, I decided I might as well speak up about it.