Anyone having issues removing the leaves from the megascan trees? I check the winter check box and it just causes artifacts rather than removing the leaves completely. I read somewhere it maybe a 5.1 issue, if anyone can help me i would be very grateful.
I have the same problem. There is also version 5.1. When I click on “winter” in the Material Instance, the leaves don’t disappear, they just turn brown. 
If i figure it out ill post the solution here, still no joy after a week