Basic app with Toolbar works just once - codenameone

Question

I'm very new to CodenameOne, and I'm developing an app with a toolbar menu. It works just the first time, I click the menu entry and when I come back to the main class toolbar stops working until I rotate or stop/resume the app.
Thank's in advance.
My code:
public class FDRMobileApp {
private Form current;
public static Form hi;
private Resources theme;
public void init(Object context) {
theme = UIManager.initFirstTheme("/theme");
// Enable Toolbar on all Forms by default
Toolbar.setGlobalToolbar(true);
// Pro only feature
Log.bindCrashProtection(true);
}
public void start() {
if(current != null){
current.show();
return;
}
hi = new Form("FDR", BoxLayout.y());
Toolbar tb = hi.getToolbar();
tb.addMaterialCommandToSideMenu("Home", FontImage.MATERIAL_HOME, e->{});
tb.addMaterialCommandToSideMenu("Orari e Turni", FontImage.MATERIAL_MEMORY, e-> new OrariTurniForm(theme).show());
tb.addMaterialCommandToSideMenu("Contatti", FontImage.MATERIAL_INFO, e-> new ContattiForm(theme).show());
tb.addMaterialCommandToSideMenu("Dove siamo", FontImage.MATERIAL_MAP, e-> new MapForm(theme).show());
hi.show();
}
public void stop() {
current = getCurrentForm();
if(current instanceof Dialog) {
((Dialog)current).dispose();
current = getCurrentForm();
}
}
public void destroy() {
}
}
And a Form:
class MapForm extends Form {
public MapForm(Resources theme) {
super("Dove siamo");
getToolbar().setBackCommand("", e -> {
FDRMobileApp.hi.showBack();
});
}
}

Answer 1

There is a bug in the current update due to the switch to the on-top menu. We'll release an update later today which should fix the navigation issue in the app.