Another problem when filtering grays is an extrange bordered bevel around the selection. This bevel contains the other grays selections.
RyanB, need help with this to finish the landscape material. I dont know if is a bug in UE4.
In the splatmap-texture(TGA 24Bits), if I change the filter from “Default” to “NEAREST” is right… the extrange border goes away, but the selection borders are too much jagged.