Note: this is about GameObject (3D) tiles, not about Sprite (2D) tiles.
It seems that the GameObject rotation of tiles set with Tilemap.SetTile() (or painted with the GameObject Brush in the editor) is not taken into account. Whatever the value of the rotation is in the prefab, it is always 0 once the tile has been added.
Steps to reproduce:
Create a new 3D URP Core project (I’m using Unity 2021.3.21f1)
Add 2D Tilemap Editor (v1.0.0) and 2D Tilemap Extras (v2.2.5) packages to project
Create a 2D Object > Tilemap > Rectangular
Change Grid orientation to XZY
Change Tilemap orientation to XZ
Create 3D Object > Quad and name it “Tile”
Set rotation of the Quad to 90;0;0 in the Inspector so it is flat on the Tilemap
Make a prefab with the Quad
Remove the Quad from the Scene
Go to Window > 2D > Tile Palette
Create a new Tile Palette
Select “GameObject Brush” instead of “Default Brush”
Click on “Cells” to unfold the UI
Click on “Element 0” to unfold the UI
Drag & Drop the Quad prefab named “Tile” created earlier in the “Game Object” input
Click on “Paint with active brush (B)” at the top of the Tile Palette window
Click on a few cells on the Tilemap
Observe the Quad rotation is lost, it is not flat but it’s “standing up” with a rotation of 0;0;0
Right now, you would have to create a custom Tile script and override the StartUp method to set the rotation and scale.
We will try and make this simpler so that you do not need to do this, and the creation of the GameObject in SetTile would use the rotation and scale directly instead (The position will still be set based on the Tile’s position).
