Rethrow error handling strategy does not trigger the error event

I'm using error handling strategy to have a fine grain control on the exception generated by a work item handler.

My goal is to trigger an exception from the error handling process (RETHROW strategy) and manage this exception with the boundary error event in the process that initially generated the exception.

In the following repository in the rethrow branch, you can find a reproducer: 

https://github.com/dmarrazzo/error-handling-strategy/tree/rethrow

When the rethrow strategy is triggered, the original process is not able to catch the exception and the error flow back to the human task that triggers the strategy.

The main process has a boundary error event on the WIH that generated the exception, so it should be able to catch the exception.