Chaos Cloth Self-Collision appears to be purposefully disabled, as this is not defined:
#ifdef CHAOS_CLOTH_MUST_IMPROVE_SELF_COLLISION // TODO: Improve self-collision until it can run in engine tests without crashing the simulation.
Removing that and running the Content Example, the mesh instantly explodes. I tweaked a few cloth parameters to try to get it to behave but it’s pretty unstable:
Since Chaos is supposed to be Production Ready, will this be addressed in 4.26 preview?