I expected to place a torch in a wall

It happens to be "flying"

1. Place a torch in a wall, The space of the room is two wide two high and five/six long. There is no space between them . Make you sure to be on the east/west edge

2. Place the torch right where the other was, by clicking on the hitbox of the previously placed torch, it happens to be "flying", by not positioning on the wall but on the air.

3. Enjoy it, because dinnerbone is a packet