Hierarchy: Tree rendering in instance detail not showing any labels for tree nodes with multiple labels

[mchlrch]

I have a Tree configuration.

The Gov Organization and Role resources have multiple labels in the data (in this case four labels with differing language-tag). The tree rendering in the instance detail is not showing any labels for the nodes with multiple labels.

Also, the tooltip is not shown either on these nodes.

When I delete rdfs:label triples until I only have exactly one left for each node in the tree, then the tree shows the labels and looks OK: