Nope that did not work either. I am on ubuntu 17.1...

# tornadofx

[anidotnet]

Nope that did not work either. I am on ubuntu 17.10, have set the stage style as transparent from undecorated and used below css

.root {
    -fx-background-radius: 60;
    -fx-border-radius: 60;
    -fx-border-color: transparent;
    -fx-background-color: transparent;
    -fx-border-style: none;
    -fx-border-width: 0;
}