Hitting enter or escape after having closed a link picker dialog leads to wicket exceptions

The following exception is logged:

[INFO] [talledLocalContainer] org.apache.wicket.protocol.http.request.InvalidUrlException: org.apache.wicket.WicketRuntimeException: component dialog:content:fog.hippoecm.frontend.PluginPage[id = 1], listener interface = [RequestListenerInterface name=IActivePageBehaviorListener, method=public abstract void org.apache
est()]
[INFO] [talledLocalContainer] Caused by: org.apache.wicket.WicketRuntimeException: component dialog:content:form:buttons:0:button not found on page org.hippoecminterface =