Why disappear PhysX when a Modifier is set on Tyflow?

[Alexx31]

Code:

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So render-only being default is just a fail-safe for large sims

Thanks, I got it!

Maybe good if there would be a note: "Turn off if you need to see PhysX". The correlation to PhysX or Particles seemed not obvious to me.
(Note not important anymore for me, I have a complete note book about Tyflow where I note everything, even the workflows for every project)