MILWAUKEE — Sometimes, U.S. District Judge Rebecca R. Pallmeyer said Tuesday, a “red flag” appears in her courtroom.Jurors will submit written questions during a trial that indicate which way they’re leaning. But the lawyers often don’t notice.“By all means, pay attention because you’re getting a huge opportunity to get insight early on,” she said.Pallmeyer spoke during a panel discussion on practicing in federal trial court in the Northern District of Illinois.The discussion …