I haven't done a lot of testing, but this bug may occur when:
1) L7 drop/landing rooms are in the palace
2) The vertical split drop/one-up room is in the palace
The VOD links above are from the seed I played earlier (listed below), and they show both of those criteria from the list.
Fixed this in a recent patch and forgot to reference the issue in the commit. Root cause was an incorrect connection in the bottom half of the L7 room.
Vertical connections (elevators and drops) are sometimes completely, or partially broken in Great Palace. Some drops will straight up kick you out of the palace (https://www.twitch.tv/videos/2060042636?t=0h32m52s), whereas others will drop you onto the ceiling of a room that was never meant as a landing room (https://www.twitch.tv/videos/2060042636?t=0h55m5s). In addition, sometimes elevators will just teleport you into a room (https://www.twitch.tv/videos/2060042636?t=0h39m8s)
I haven't done a lot of testing, but this bug may occur when: 1) L7 drop/landing rooms are in the palace 2) The vertical split drop/one-up room is in the palace
The VOD links above are from the seed I played earlier (listed below), and they show both of those criteria from the list.
Version: 4.3 9f6a5d6 Flags:
hEAErqAFestUV1RrWVd7gQkcumv@tNiyAAWA
Seed:789382093