I'm trying to make a random fill of some flowers using Fill>Pattern>Script>Random Fill. Once I click okay it shows a white preview box, then doesn't work. Density is all the way up, opacity all the way up, etc. I've tried 4 versions going back of PS and I've reset all of my settings. I'm at a loss here. I can't find anything online regarding this issue either. Attached is an image of what comes up.
Hard to tell without seeing what pattern was selected before the Random Fill dialog is presented. It's possible your pattern is all white or the scaling is to much. Try using a different Pattern preset and reduce the minimum and maximum scale factor down.
Senior Product Manager - Customer Advocacy - Digital Imaging