Boro opened the scoring after youngster Josh Coburn smashed the ball home as it ricocheted to him following a mix-up in the West Brom back-line.
Albion equalised as Grady Diangana met a knock-down sweetly to crash a shot off the post and past goalkeeper Luke Daniels.
Valerien Ismael's side struggled to break down the stubborn Boro defence as they were forced to settle for a draw at The Hawthorns.
Warnock's record-breaking exit
Warnock broke the English managerial appearance record as he stood in the dugout during Boro's defeat away at Luton Town in midweek.
The veteran boss was animated on the touchline throughout the game versus the Baggies, contesting every refereeing decision that Matthew Donoghue made against his side which resulted in him receiving a yellow card.
An announcement was made from the Middlesbrough media team only moments after the final whistle blew, in-fact the boss was in-between media interviews when the statement was released.
Warnock leaves the club with dignity after his outfit put in a battling performance to pick up a point away from home.
Diangana breaks scoring duck
Finally, the 23-year-old broke the over year-long goal scoring duck as he leathered home a mid-range effort in off the post to equalise for his side.
The former West Ham United winger has looked a shadow of the player that bagged a combined 14 goal contributions during the Baggies' last Championship campaign during his initial loan spell at the club.
He joined the Baggies on a permanent deal following their promotion to the top-flight and reportedly cost £18 million, however, that price tag has been met with a return of two goals and one assist since making the switch to the West Midlands.
Albion fans will be hoping that their record signing can get back to his best after that confidence-boosting goal.
Murmurs of discontent
Boos rang around The Hawthorns at half time, as Ismael's side went in 1-0 down after Coburn's opener.
A percentage of West Brom supporters gave a disgruntled response to the performance of their team, as sloppiness in play meant they were unable to string functional counter-attacks together.
West Brom fans seem upset by the stubborn nature of Valerien Ismael, and despite sitting third in the table, some are wishing for him to be sacked after only 17 games in charge of the Baggies.
However, with the former Barnsley manager on a four-year deal at the club, and having spent nothing during the summer transfer window, it seems highly unlikely that the board will pull the trigger on the Frenchman for a while.