Godot: Particles 2D ignore AtlasTexture region

[Ranoller]

Operating system or device, Godot version, GPU Model and driver (if graphics related):
Godot 3 beta 1

Issue description:

Atlas texture region for particles is working in Godot2, but not in 3.
Atlas texture works in Sprite in both.
The image shows same resource (AtlasTexture) for the two nodes:
I try all options of ParticlesMaterial / CanvasItem/ AtlasTexture etc... etc...

[Ranoller]

I will referencing #13443 because i think that there is something break in the class hierarchy of Particles2D

[samdze]

Still present in 3.0.3 stable.

[guelinator]

Still present in 3.1 stable

[Anyeos]

Still present in 3.2 stable but at first try it worked and when I opened the Scene the second time it stoped working. It does not work playing game neither. I am using Particles2D not CPU.

It is the purpose for real life use of an AtlasTexture so I think it must be fixed as soon as possible.

[akien-mga]

This is fixed by #32496 for 4.0 and 3.2.1.

[samdze]

32496 only fixes the CPUParticles2D bug, this issue is about the Particles2D one, which seems like it has not been fixed yet.

[Slluxx]

nope, not fixed

[bitbrain]

With 3.2.1 I can confirm that this bug is still a thing:

I configured the AtlasTexture and the preview shows it correctly:

However, when being rendered it always renders the full texture and ignores the region: