Scaling TileMap scales physics layer incorrectly

[miscbill]

Godot version

4.0.beta3

System information

macos 12.1, Vulkan API 1.1.216 - Using Vulkan Device #0: Apple - Apple M1 Max

Issue description

When a TileMap is scaled, the collision polygons in its physics layers are scaled, but translated too far.

In this screen capture, the purple tiles have collision boxes. I expected the boxes to line up with the tiles. (The Node2D containing this TileMap has a scale of Vector2(1.5,1.5)

Steps to reproduce

Create a tilemap.
In it's TileSet, add an atlas texture, make a few tiles from it.
Add a physics_layer to the TileSet.
Use the paint tool to give tiles distinguishable collision boxes in that physics layer.
On the TileMap, set "Collision Visibility Mode" to "Force Show".
Draw some tiles on your TileMap.
On the TileMap, set scale x and y to 1.5.
Run the scene, note the weirdly place collision polys.

Minimal reproduction project

tile_scale_test.zip

[Calinou]

I can confirm this on 4.0.beta 0c23a2c while porting the 2D Isometric Game demo: godotengine/godot-demo-projects#782