Dolmen Gate has no effect when used with preeminent captain

With Dolmen Gate on the field, I attack with Preeminent Captain and place Precinct Captain (2/2) on the battlefield tapped and attacking. Precinct is blocked by Plated Geopede (3(1)/3(1)) and destroyed.
Game log is attached, see turn 7/8
Game log is attached, see turn 7/8