When I set the backgroundColor to Color(0.0, 0.0, ...
# tornadofx
m
When I set the backgroundColor to Color(0.0, 0.0, 0.0, 1.0), I get click events, when I set it to Color(0.0, 0.0, 0.0, 0.4), I stop getting click events. So the background color is affecting functionality.