I have compiled widget set for vaadin (including org.vaadin.hene.popupbutton.widgetset.PopupbuttonWidgetset), but getting different result in 7.4.8 and 7.6.0.b2. Is this intended and something I should be aware of OR is there a bug in compiling widget set? The most interesting part of this is, the whole .v-popupbutton-popup{} is renamed to .v-popupbutton-popup-popupbutton-legacy{}, therefore I lose font-family, font-size, line-height and color for my styling.