I was making some detailed trees and tested out the new brush when I had 3 trees and it worked fine (but seemed to produce one tree more often than the other 2). I made 2 more trees and when I went to test it out with 5 trees it would only produce the tree at the top of the list despite me choosing random and 5 ranks. What's going on? The size I set was 400x500, wouldn't work despite multiple attempts and fiddling. I then tried 500x500, no effect. 400x400, still producing only the tree at the top of the list. Then I finally deleted trees 4 and 5 and it wouldn't work with the exact same settings it worked at earlier with three trees. What's going on???