Sean Dyche felt two defining moments cost his side victory in the 2-2 home draw with WBA.
The Clarets surrendered a two-goal lead for the second home game running after Ashley Barnes and Danny Ings scored together in a game for the first time.
Albion replied though Chris Brunt in first half stoppage time, before Brown Ideye levelled midway through the second half.
But Dyche felt a foul in the lead-up to the Baggies second goal, followed by a clear handball by Callum McManaman, were decisions that went against his side.
He said: “We are disappointed with the two set pieces because we do think we are good at that.
“This season has been harder because of the quality and often teams are physically very big.
“Also, I don’t like to over-question referees, but there are two defining moments that went against us.
“I think there’s a foul on David Jones from the corner for their second goal and how we didn’t get a penalty is a surprise.
“The margins are fine and I very rarely mentions it about referees, but I felt today it affected that game.”
Albion followed Crystal Palace in coming back from two goals down to the Clarets, who also lost 4-2 in the FA Cup replay at Spurs after racing into an early two-goal lead.
Dyche added: “At football that can happen; we have done it ourselves at Manchester City.
“But I also look at the performance levels and in the first half I think we were as good as we’ve been at this level.
“Other the maybe 15 or 20 minutes at the start of the second half, when the game got a bit rough and tumble, I thought we were excellent overall.
“It’s a results industry, but there has to be a performance level to back that up and, goals apart, I think people would say there was only one team playing in a manner to win, so I am pleased with the performance.
“We couldn’t get it over the line, but even in the last 15 minutes we are going and relentlessly trying to win the game.”
Dyche, who insisted it was too early to diagnose a knee injury to Dean Marney that saw him replaced at half time, added: “Early in the season people were asking if we could score goals. We are scoring plenty now, but we are conceding more than we would like.
“We have to defend better at set pieces, like every other team has to.
“But as I say there is that fine balance. The art of football is to put it in one end and stop them going in at the other.
“We are close to the balance, 17th in the Premier League and improving, so overall we are in good shape.”