Boro led 1-0 at the break against Rangers thanks to Uche Ikpeazu’s penalty but got lost in a chaotic second half, allowing three cheap goals.
This is how the goals conceded particularly angered Warnock as his side slipped to their first loss of the season.
“It was a great game, but I’m disappointed with the goals, disappointed that we didn’t score more, disappointed with everything really.
“I think the first goal knocked us out a bit. We got caught during the break of our attack. We were a little soft tonight at the back, one or two guys could have put a foot earlier. But we were passive and we were punished.
“Without going too far, I will go further with them tomorrow, but we have to do better. They didn’t really have to do much to score the goal, it was really basic. Without naming names, it is disappointing. “
Warnock was also angered by a few decisions in the second half and claimed Charlie Austin got away with a header on Grant Hall.
He said: “It’s really amazing.
“I thought he gave her a head butt. It’s a simple whim. The ref saw it and thought it was a head clash but when you see the video it’s a little different. “