invalid property hippo:search accessed for display name

When browsing through a faceted reference or search tree on the repository console (port 8081), an exception is thrown.
The cause is the assumption in getDisplayName() that the property hippo:search is always defined on a virtual node (i.e. one with the hippo:uuid defined).

Accessing node /root/facetreference-demo/demo/english/articles

Error while accessing the repository, exception reads as follows:

javax.jcr.PathNotFoundException: hippo:search
javax.jcr.PathNotFoundException: hippo:search
at org.apache.jackrabbit.core.NodeImpl.getProperty(NodeImpl.java:2581)
at org.hippoecm.repository.servicing.ServicingNodeImpl.getProperty(ServicingNodeImpl.java:354)