Bubble overlays leaf bubbles

Hi, tried to add a zoom to the bubble groups. Works quite well, till i'll get back to the origins. Then the bubbles get overlain from the group bubble.

I prepared a demo: https://codesandbox.io/s/1zx495rw9q

Just click on the grey bubble and to go back with the click on a magenta one.

Any idea how i can solve this? Or maybe `react-bubble-chart` has already such functionality?