When trying to delete a page I get an Exception coming from the dependency check I guess. Copied from the admincentral messages window:

info.magnolia.module.dependencies.action.DependencyAwareConfirmationAction.getItem()Linfo/magnolia/ui/vaadin/integration/jcr/JcrItemAdapter;
Sender
superuser
Message text
RpcInvocationException: Unable to invoke method onActionTriggered in info.magnolia.ui.vaadin.gwt.client.actionbar.rpc.ActionbarServerRpc caused by InvocationTargetException caused by NoSuchMethodError: info.magnolia.module.dependencies.action.DependencyAwareConfirmationAction.getItem()Linfo/magnolia/ui/vaadin/integration/jcr/JcrItemAdapter;