How can any official look at an obvious shirt pull and tell another official they believe there has been a clear and obvious error
It's an absolutely laughable decision. I've seen games where the VAR has got involved to recommend a penalty for that sort of incident.
I feel like the bar for perceived smaller clubs to get a penalty is so much higher than the bigger clubs. VAR is just increasing the perception of big club bias. If that decision was in favour of a City, Arsenal, Liverpool, United etc, no one even thinks twice about it.