React raises 'Invariant Violation' when we add an item

[kyouko-taiga]

The error is raised when the modal form used to create an item is dismissed, but only if we actually create a new item.

The complete error returned by React:

Error: Invariant Violation: Component (with keys: getDOMNode,_handleChange,props,context,state,refs,_reactInternalInstance) contains `render` method but is not mounted in the DOM
dispatchEvent11057104_994066363946450_2043645399_n.js:10955
(anonymous function)
http://localhost:5000/api/issues/

A similar unless identical issue has been reported on react's github: #2410