Rotation/Scale/Translation mixes on CollisionShapes not consistently resulting in correct collision

[SgtLion]

Godot version:
v3.2.2.stable.official

OS/device including version:
Windows 10 - v1909

Issue description:
When creating levels with a number of Bodies with CollisionShapes, I simply noticed that the Player KinematicBody could walk through certain shapes as if one of their scales was very far wrong (i.e. shape mostly walk-throughable, but middle section still colliding).

Steps to reproduce:
Create a few StaticBodies (Or KinematicBodies/anyBodies), add a CollisionShape, add some rotations to the CollisionShapes (in my case, a couple of 90degrees on the x-axis), and play around with Scale in both the StaticBody node and the CollisionShape node, you'll very soon find a mix where collision is not happening properly.

I can't work out the pattern of issue here, but I think it has something to do with rotating/translating/scaling the Shape such that one of those operations isn't be applied on the correct axis for the real collision shape.

Minimal reproduction project:
Walk into the small box, you will see correct, expected collision between player and box. Walk into the big box, and you will be able to walk all the way to middle as if its Z-Scale was like, 0.001. The only difference between these boxes are the transforms on them and their StaticBody parent.
HuntDownTheWall.zip

[Calinou]

You shouldn't scale CollisionShapes, especially in a non-uniform manner. The editor should warn you about this already – see also #32975.

[SgtLion]

That would make sense, resetting the transforms on the collisionShapes seems to resolve the issue. Odd still, then I guess the bug report is perhaps simply that I'm not being given that warning.

[aaronfranke]

Likely related to #5734.