Select interaction applies its select style to other select interactions

[ahocevar]

From #4450 (comment):

I use two "ol.interaction.Select" for two vector layers with different style for hover.
When you move with pointer to one Feature, show two different symbol from both interaction, because every interaction work with both unmanaged layer.

Example http://jsfiddle.net/tohu/Lh76thmz/2/

What is right solution ? With v3.11.1 http://jsfiddle.net/tohu/Lh76thmz/1/ is alright, but now no.
Thanks