Warning message after deleting a directory

Reproduction path:

• add a folder in the CMS
• delete that folder
• click another folder : the stacktrace below shows up in the log.

I think the problem is related with the current activity plugin on the dashboard (see line in stacktrace:

at org.hippoecm.frontend.plugins.cms.dashboard.EventModel.detach(EventModel.java:94)

WARN - JcrItemModel - Failed to load JcrItemModel
javax.jcr.RepositoryException: not an absolute path: test
at org.apache.jackrabbit.core.SessionImpl.getItem(SessionImpl.java:815)
at org.hippoecm.repository.decorating.SessionDecorator.getItem(SessionDecorator.java:178)
at org.hippoecm.repository.decorating.checked.SessionDecorator.getItem(SessionDecorator.java:200)
at org.hippoecm.frontend.model.JcrItemModel.load(JcrItemModel.java:155)
at org.apache.wicket.model.LoadableDetachableModel.getObject(LoadableDetachableModel.java:114)
at org.hippoecm.frontend.model.JcrItemModel.save(JcrItemModel.java:183)
at org.hippoecm.frontend.model.JcrItemModel.detach(JcrItemModel.java:171)
at org.hippoecm.frontend.model.ItemModelWrapper.detach(ItemModelWrapper.java:68)
at org.hippoecm.frontend.model.JcrNodeModel.detach(JcrNodeModel.java:80)
at org.hippoecm.frontend.plugins.cms.dashboard.EventModel.detach(EventModel.java:94)
at org.apache.wicket.Component.detachModel(Component.java:3373)
at org.apache.wicket.Component.detachModels(Component.java:1149)
at org.apache.wicket.Component.detach(Component.java:1095)
at org.apache.wicket.MarkupContainer.detachChildren(MarkupContainer.java:1523)
at org.apache.wicket.Component.detach(Component.java:1099)
at org.apache.wicket.MarkupContainer.detachChildren(MarkupContainer.java:1523)
at org.apache.wicket.Component.detach(Component.java:1099)