here is a reproducer

class TestWizard : Wizard() {
    init {
        add(View1::class)
        add(View2::class)
        enableStepLinks = true
    }
}

class View1: View("Longer View Title 1") {
    override val root = vbox {  }
}
class View2: View("Shorter 2") {
    override val root = vbox {  }
}