Uncaught TypeError: Cannot read property '__reactInternalInstance$3jhqtt16e9n' of null

[ibc]

Just trying to apply the "simple" example usage into my app. Global <Tooltip>, a single <Origin> somewhere, and the corresponding tooltip reducer added. This happens:

Uncaught TypeError: Cannot read property '__reactInternalInstance$3jhqtt16e9n' of null
    at Object.getClosestInstanceFromNode (ReactDOMComponentTree.js:120)
    at findParent (ReactEventListener.js:45)
    at handleTopLevelImpl (ReactEventListener.js:74)
    at ReactDefaultBatchingStrategyTransaction.perform (Transaction.js:150)
    at Object.batchedUpdates (ReactDefaultInjection.js:1)
    at Object.batchedUpdates (ReactUpdates.js:104)
    at dispatchEvent (ReactEventListener.js:154)

Any suggestion about how to investigate it?