[CK77]

I do have some movies with multiple studios in the .nfo file, for multiple of those studios there are icons available and it still shows me an icon.

I find that difficult to understand. It shouldn't, so I guess Emby is modifying something in the chain of events. 

Emby shouldn't be the cause, i use the Emby for Kodi addon, so Kodi fills up it's own database with the info it gets from Emby.

I just tried another movie, i left 2 studios and both have an icon in the studio pack. It selected the second one of the list to show in Kodi.