Just noticed a UI issue and thought I should report it.
Using Simplify3D 3.0.2 on Mac OSX 10.10.5.
Reproduce: with a model displayed in Preview Mode window, move the End slider to about half and then toggle the Single Layer Only checkbox a few times.
Expected behavior: display toggles between single layer and multi layer modes as you click on it.
Actual behavior: display shows a single layer only regardless of the state of the Single Layer Only checkbox.
