Bug when changing data through UI button

[Riad-Jarjour]

In a treemap with 2 groups, clicking the button to change the data works well if you are outside the groups. But try clicking on a group to enter it then click the button to change data and you will see that the treemap disappears. Here's a jsfiddle.

You can see the problem from the code. I think something interrupts the transition, that's why the height of the created boxes don't reach their maximum, and the opacity of the elements with class "d3plus_rect" is stuck at a very small value. Changing the opacity to 1 shows the boxes again.