Tile Palette bugs out when I use a Rule Tile

Hey guys,

I'm trying to make a top-down 2D creative sandbox where the player can build/destroy things. Currently, I'm trying to use a RuleTile from the Unity 2D extras pack. It is a tile with around 47 different sprites which will link up with each other depending on where it is placed in relation to identical tiles.

I'm using a rule tile with 47 different sprite outputs, using the Game Object of the Palette I am using it in. Their default collider is set to Grid.

The problem is, when I try to move this into the Tile Palette, it completely locks up that palette (and eventually unity) unless I delete it beforehand. I notice that if I try to change the tilemap i am painting onto from within the palette tool, it has created many different tile maps called "Layer 1".

Any ideas of what is going on here? Did I do something wrong in this process?

Also, is this there a better method to create player-built tiles? Quite new to this whole thing so any advice would be appreciated!

 

Do you have your tiles set to locked?