There are two things I don’t bring up much at church to avoid arguments: That tithing is an old testament concept, like animal sacrifice, and my views on eternal damnation.
And now that I live in the bible belt, a third thing: alcohol
That is, except when one of these is actually the topic of discussion or a lesson.
At least in the conservative Christian circles I frequent, there are topics assured to raise legalistic arguments from otherwise very orthodox Christians: tithing, homeschooling, entertainment choices, alcohol, and Sabbath observance.
I'll follow Paul's advice in Romans 14 on these issues. If someone is convinced that God's Word teaches them something which I disagree with, I'll not deliberately give them offense by practicing something they object to if I can help it. However, their interpretation of Scripture on these controversial issues is not binding on my conscience.