Drill down doesn't work as expected in api v1.4

Hi guys.
I am having some issues with custom visual (api v1,4) related to drill down.
https://app.powerbi.com/view?r=eyJrIjoiNjc3NDg1NTUtMzJlMC00MWUwLTg1NzYtMGU4OTQzNDM2NThjIiwidCI6IjAyOWI2YjIzLWZhMDctNDhiYS05NjM5LTcyYWYwYTY3MzcyOSIsImMiOjEwfQ%3D%3D

As you can see from the link, both charts use the same data set. However, in custom visual only one button is working. (which is "Go next level in hierarchy"). All other buttons do not trigger any events in the code.

Am I missing something or it is a known bug?

Thanks
Nick