Calling setItems() multiple time creates massive memory leak in ChoiceBox

I have a choicebox with 1000 items.
I call setItems with the observablelist of items.
Everything is fine
I call setItems on same component (with smaller ObservableList)
Everything is fine(?)
I call setItems on same component with the original list

The JVM goes wild and runs out of memory

Including code to replicate. pressing button creates the issue, you can see it on Profiler.

Similiar behavior occurs if one just reloads the obervable list with new data.