MultiComboBox from componentfactory

It took me nearly an hour so I want to share my knowledge here immediately (I know I’ll search for this hint here in the future :grinning: )

The wonderful com.vaadin.componentfactory.multiselect.MultiComboBox (not to be confused with the nearly similar org.vaadin.gatanaso.MultiselectComboBox) needs to be package-whitelisten in order to work (at least for Vaadin v14). So be aware of your application.yml

  whitelisted-packages: com.vaadin.componentfactory.multiselect

Now when you download an app from start.vaadin.com the whitelisted-packages looks like this:
vaadin.whitelisted-packages = com.vaadin,org.vaadin,dev.hilla,com.example.application
But it wasn’t the case in the good old days :smiling_face_with_tear: