So
It doesn't
I have X servers added to favourites and whenever I use the filter to show me those, it's either none or only some of them showing up. It seems to be random, since if I swich several times between "internet" and "favourites" the servers showing in the latter are different each time (if there are any of them found at all).
It's not the issue of other filters (no players, password put etc)
I've reinstalled M&B more than once and actually changed my PC since it started but it doesn't change
Help plox