WicketRuntimeException logged when creating and linking documents

Exception creating two documents, the second having a RTF link to the first. Reproduced in archetype and Go Green

Steps to reproduce:
1) Start the archetype and login (admin/admin)
2) Go to Documents/myhippoproject/News and create a news document. Set a title and Save & close the document
3) Create a second news document. In the body create a link to the first document
4) Save and close the document
Expected: No errors
Actual: WicketRuntimeException error thrown on the console. No related functional issue seen

org.apache.wicket.WicketRuntimeException: Component 'root:tabs:panel-container:cards:2:panel:center:tabs:panel-container:cards:1:panel:editor:extension.editor:form:template:view:4:item:view:1:item:panel' has been removed from page.