Pizza's won't collide :p (slim softbody)

[GilG]

I don't seem to be able to have collision with a "slim" softbody.


I tried to max the Time step to 1/32 and update the Particle Bind Solver Steps to 100.
The added precision didn't change the result.

I also tried the samples scenes "tyFlow_softBodies_001" and "tyFlow_clothSelfCollisions_001" and was able to see that it should work.
The difference (I think) here is that the mesh is slimmer of what I tested otherwise.


I made a scene here 
https://files.cynaptek.com/001_Pizza_Roll_004.zip

I read a lot of the doc but didn't find anything that could help me.
I also tried to explore the Spawn element to add Voxels inside I didn't notice a change for the collision.
I hope someone could help me go to the right direction.


Thanks !