Selling a Tile makes Trap appear

[unborn blaze]

(minor, visual)
In the shop.
Had 3 Tiles, sold one.
Trap pops in under it, messing with the layout.
Buying a new Tile fixes it, hiding the Trap again.

[frail notch]

I did see this one to but I had 4 tiles to start and it showed the traps at 3 tiles in my collection