Workbench cannot display nodes that contain a colon character. The Imaging module generates such nodes: jcr:content. This change was introduced with the move from DMS to DAM. In 4.5 the same node was named document and a JCR browser tree was able to display it.

4.5: /pop/promo/dms/demo-project/img/bk/Opener/coral-light/document
5.2: /pop/promo/dam/demo-project/img/bk/Opener/coral-light/jcr:content

This issue impacts users because trees like /trees/imaging will be phased out and replaced by the JCR Browser. A user cannot inspect the imaging workspace and learn how the rendition generation works, for example.

The issue is actually a combination of a not proper config (see attached screenshot for a correct one)

• includeSystemNodes should be specified as true
• a mgnl:resource nodeType missing in the configuration . This causes the generated query not to contain mgnl:resource which is subnode of jcr:content.

Still with this configuration jcr and mgnl properties are not visible which may not be the desired behaviour for a JCR browser. Reason for that is the hardcoded skipping of system properties at info.magnolia.ui.workbench.tree.HierarchicalJcrContainer.getChildren(Item) (see: MGNLUI-3021).