So having issues with my underlay tool "/b under d1". Know i just recently found out about this brush and was told/read it works like the overlay but on ceilings.
Now here's my issue its doing nothing of the sort its acting as the over lay brush. When i point it at my cave ceiling nothing happens with either the tool. as soo as i point to the ground and click the tools act like the overlay brush and place what i wanted on my ceiling in the ground.
I have done everything i can think of with resetting all my brushes to default. I feel its simple fix, i'm just lost