The new tattoo feature suffers from the same problem on Mac as the makeup and skintone sliders mentioned in this thread: [MAC] Makeup sliders don't work when sliding to the left. I only did some q...
Ideas
Noticed this when testing tattoos, too. Additionally, I've found that some tattoos have sliders that do not work at all (aside from opacity), mostly tattoos that have multiple swatches (although not all that do) and tattoos that are all black. Also on Mac.