This issue targets MenuButton.

I have some rules that doesn't render the same on Mac and Windows. Windows is OK, Mac has a small glitch. 2 pix diff horizontally.
Here are my rules:
.list-button {
    -fx-background-radius: 0.0;
    -fx-padding: 4.0;
}
.list-button .label {
    -fx-padding:0.0;
}
.list-button .arrow-button {
    -fx-padding:0.0;
}
.list-button {
    -fx-padding: 4.0 5.0 4.0 5.0; /* BUG, on Mac, to have it properly centered, the padding needs to be: -fx-padding: 4.0 6.0 4.0 4.0;
}