Hello, its not necessary :) I have solved the issue already. It seems, that there is a problem, when you have multiple series with SHARED tooltip, and then something else, that doesnt share tooltip (basicaly, the shared tooltip event seems to ignore any other serie if ,,visualy” they seem to be in the same range).
Simple solution to this was to disable tooltip sharing and inside the tooltip render method, just get the data by hand, which is quite simple, since hover event returns index value, among other stuff.
Anyway, thanks for your time. I hope that my response will be helpful to you for any future reference regarding this topic.