So strangeeee

So if any one reading has friends of different ethnicities, can tell me if it's normal for that person of the different ethnicity to not have a full conversation with you when they are with people who have the same ethnicity as them ?? I mean I have a couple friends who say hi, but then that is literally it, and if I go to continue the conversation they seem to watch their friends' reactions ..
omg that is strange
but I'm sure they do not mean to be rude but it feels like I'm being excluded because I'm not a certain ethnicity, and honestly I do not care that much but it makes me question: O

Clip of the day; from Kpop star season 2! Raccoon boys!!!