Is it normal for family members to leave someone alone when they are sad?

My family has this pattern that when someone is upset, usually one of us daughters (we're all adults), its kind of "expected" that the upset person will be isolated until they get over their sadness. The sadder they are the more isolated they are. This is true especially when two family members get in a heated argument, the person seen as "correct" is treated normally, and the person seen as "incorrect" who usually ends up more emotional is served the isolation sentence.

It always felt off to me and i dont like it, but its also very difficult to approach someone who's upset because it feels like my family is the type where being "sappy" and compassionate is both uncomfortable for the doer and receiver. I don't like this either, and am personally trying to get better at doing and receiving mushy kindess and interpreting it as genuine.

But genuinely, is this normal? Do a lot of families just intrinsically do this? I always heard that people who isolate when sad are depressed, or that its a maldaptive action that they have to try and move past, but thats usually when its their own decision, i think.