Unable to add child node in contribute mode

Question

A node is configured to be added in contribute mode, but the user is not able to add its child nodes

Answer

Contribute mode is designed to allow for pretty limited modifications to nodes of certain types. It does not take into consideration the child nodes. To override this, you can explicitly specify jmix:contributeMode for the parent node and the subnode types to add and edit the subnodes in contributeMode.