I don't recall specific details off the top of my head, but several times over the last few years I've read about legal cases in which a parent's gay or bisexual identity was used against them (more or less successfully) in custody cases.
This brings up an important point. When the U.S. Supreme Court struck down all state laws criminalizing homosexuality with Lawrence v Texas, a lot of people on the right said the decision was overkill since such laws don't get enforced and probably won't be enforced except in extreme or narrow circumstances.
But as we see here, the mere existence of such a law in the state criminal code is enough to cause all sorts of discriminatory problems in other areas of life, even if nobody actually goes to jail for same-gender sex.
Republican run states are refusing to strike such laws off the books, hoping that the new conservative Supreme Court will eventually strike down Lawrence. And at least two justices have given them hope that their patience is justified.
We should all be thinking hard about that.