A Bronx Family Court judge’s bid to block a New York Commission on Judicial Conduct investigation into complaints that she demeaned litigants, lawyers and court officers in her courtroom has been rejected by a Manhattan Supreme Court justice in a decision that was unsealed Wednesday.

In addition to reviewing complaints from third parties, the commission has initiated its own investigation into whether Family Court Judge Marian R. Shelton was discourteous to two other Bronx Family Court judges and whether she violated the Rules of Judicial Conduct by refusing to preside over the part that hears newly initiated cases, allegedly because a court officer had been reassigned from her courtroom.