Last night, a public forum at George Mason High on the adoption of a new affordable housing policy for the City of Falls Church ran afoul of a conflict as the mayor, city manager, school superintendent and others keynoted a meeting of the combined school PTA organizations in another part of the school campus. But there will be a second on the new draft affordable housing policy next Thursday, Jan. 17 at the Winter Hill Senior Center’s Club Room, 330-B S. Virginia Ave., at 7 p.m.