SpriteFrames not working with TextureAtlas!?

[rakkarage]

Godot version:
3.2.3

OS/device including version:
Ubuntu 20

Issue description:
I have a couple files like this that I am using to create a SpriteFrames for an AnimatedSprite.

It works fine until I change import settings to combine some into a TextureAtlas? Then It changes and I cannot select the right tiles?

Steps to reproduce:

1. animation is fine
2. combine with other files into atlas
3. animation broke?

I have seen some related issues like this: #9340 but none really the same I think.

Minimal reproduction project:
https://github.com/rakkarage/TestAtlasAtlas

Thanks.

[Calinou]

Support for AtlasTexture was added to SpriteFrames in #37939.

[Calinou]

@rakkarage You should be able to work around this by following the steps described here: #51030 (comment)