Willy Boly headed Wolves in front just before half-time but VAR eventually chalked the goal off due to Pedro Neto's toe straying into an offside position.
The pair spoke at length on their way down the tunnel and Coady wasn’t able to get a definitive answer from Dean as to why the goal had been chalked off. Several other players were exasperated by the decision and Dean cautioned Ruben Neves for his protestations.
As Dean walked towards the tunnel for the half-time interval, Coady approached the referee and demanded to know why the goal was ruled out.
Coady said: "So who's offside? Jota? Jota's offside when the goal goes in?"
Dean then pointed to his ear indicating that the VAR had told him to rule the goal out despite him not seeing the decision.
That prompted Coady to shout whilst shrugging his shoulders: "So nobody knows? You're refereeing the game and you don't know?"
"So nobody knows!?" 🤷♂️— Football on BT Sport (@btsportfootball) February 14, 2020
Conor Coady was left with questions at the break for Mike Dean...
Does VAR need to change in its current form? pic.twitter.com/7dm5yZedVg
VAR has proven to be the biggest talking point in the Premier League this season and Boly is the latest victim of the controversial system.
There have been calls to scrap the technology but they were put to bed earlier in the month by Premier League chief executive Richard Masters. Instead of removing VAR, Masters says it needs to be improved."I don't think VAR has been damaging but I accept it needs improvement," Masters told BBC Sport.
The draw with the Foxes means that Wolves stay 14 points behind Leicester, who remain eleven points ahead of fifth-placed Sheffield United.
However, Wolves could be overtaken in seventh place if Manchester United avoid defeat against Chelsea on Monday night, while Tottenham Hotspur can climb into the fifth spot in they beat Aston Villa on Sunday.