[v0.9.8.4] A Background-Tile error if you put a B-Floor Door

[heavy river]

If you fill the room with the Hole tile, and place it in the theme of Gustwind Palace , and then place a door that leads to a B-Floor (or lower floor), and return to the main floor, it will remove the background it has

[fresh flame]

This isn't a bug, it is expected behavior.

The hole is rendering the room from the floor below.