Sloppy Rangers missed the opportunity to punish Celtic as the champions capitulated at home to Motherwell.
Goals from Alfredo Morelos and Fashion Sakala put the Ibrox side in full control until Jordan Roberts and Kaiyne Woolery earned the battling visitors a point.
Celtic had earlier been held to a goalless draw against Hibs but Rangers' failure to capitalise ensures the gap at the Premiership summit remains three points.
