console copy dialog does not report error

Noticed during the training. Reproduction path:

• set up new project using the archetype
• install a content feature, e.g. the News feature
• after rebuild copy this node:
  /hst:hst/hst:configurations/hst:default/hst:catalog/essentials-catalog/banner

to this path:
/hst:hst/hst:configurations/common/hst:catalog

Result: the action fails, but no error message is given. You think your action succeeded, but hey, where is the copied node? There is a message in the log, but that is overlooked easily of course:

[INFO] [talledLocalContainer] 16.10.2015 12:49:38 ERROR http-nio-8080-exec-2 [DefaultCopyHandler.startNode:88] Unable to create node from NodeInfo NodeInfo[banner[0](type=hst:containeritemcomponent, mixins=[])]: No applicable child node definition