Boro signed off a busy August with an end-to-end draw at Bristol City.
Both sides hit the post before Kasey Palmer nodded the hosts ahead in the first half's closing stages.
Boro hit back when a Paddy McNair cross forced the Robins into an own goal, then Jonathan Woodgate's side nudged in front thanks to Britt Assombalonga's 100th EFL goal.
But City had the final say thanks to Tommy Rowe's equalising header, though Boro were the side pushing for a winner as the referee blew for full-time.
Watch highlights from the game in the video above.