OK button is enabled when moving a document to it's own folder

When I try to move a document to it's own folder then the server logs the following exception:
WicketRuntimeException: Stopped plugin is still being referenced: org.hippoecm.frontend.plugins.cms.browse.list.Fold
erViewPlugin

Steps to reproduce (using cargo.run with gogreen and firefox)

• login as admin to cms
• open document perspective and find a depublished document (or depublish one)
• click Document -> Move
• folder picker dialog opens in folder of document with OK button disabled
• select a different folder then the one the document is in
• then re-select the folder where the document currently is in
  Expected: OK button is disabled again
  Actual: OK button is enabled

I you do click OK button then the modal dialog shows error panel and an ERROR is logged on the server

[org.onehippo.repository.scxml.SCXMLWorkflowExecutor.handleException():184] Cannot move document to same folder
[INFO] [talledLocalContainer] org.hippoecm.repository.api.WorkflowException: Cannot move document to same folder