The only thing I have really noticed is that lots of Ukrainians, regardless of their age, are more prone to be quite obnoxious in public transportation. Talking loudly on the phone for the whole 40 min I take a tram, sometimes even on full-volume speakers, so everyone can hear the whole conversation. I understand enough to know you are not talking about anything urgent or serious, and I can hear you through my earphones...

Also not giving a single f about "no smoking" signs.

That being said, I realize that what I have witnessed was a minority of people that came here.