Error when drilling down with Icon Map

Hello dear community

I'm trying to make a map with icon map but the drill down is not executed correctly sometimes.

I am using 2 geojson files hosted on my gitgub. One contains a level of Departments and another the level of Municipalities.

I send you a video (less than a minute) where I do a demonstration with a department called 'Casanare'. At first the drill down is executed correctly; However, when I do it again IconMap takes me to another department called 'Cauca'.

What could be happening with my map? This situation occurs with some other departments, with others drill down does work.

Video demo: (less than a minute)

https://1drv.ms/v/s!AhI_J0SxClWmgd9iSM70InxxjJd25A?e=mp5TD2