ZBrushCentral

Trouble with Zremesher density with polypaint macOS

Hello, Iam newbie to Z, Iam testing the demo because Iam interested by Zremesher retopology way,
I followed many tutorial and I can’t get working with Polypaint for control mesh density.
I hear from an user it was a bug from 64 bits macOS version of the ZBrush app. Anyone know this issue,
is the same issue with Zbrush Core ?
thanks

I am having the same problem on my Mac. it sort of worked, but not well on R6, but not at all since R7-R8. Is this just a bug for the Mac version?