Usually intermediate leads/follows are more guilty of this, often when dancing with a partner they ‘think’ is on a lower skill level, a term I refer to as dancturbating.
Dancturbating : The act of dancing, often to draw attention, while completely ignoring your dance partner.
One of the best parts of dancing for me is attempting to connect with a person through the medium of dance. Often I use conversation as an analogy for dancing and ignoring your partner is effectively the same as having a one sided conversation.
Now I am not bashing on solo jazz/Charleston, in matter of fact I think it can be quite badass. But when you are dancing with another person its a nice courtesy to at least acknowledge their presence. I am also not saying if you are dancing with someone you feel is newer to the dance, only dance vanilla white basics.
If you have some decent social dance experience, then within a few seconds of dancing with someone you can usually figure out as an experienced lead/follow what boundaries a person has a dancer. Listen to your partner and use that knowledge to create a great dance experience for both of you.