Why did VAR not rule out John Stones’ last minute goal?

After a VAR review, John Stones' late goal gave Manchester City a disputed 2-1 victory over Wolves, propelling the defending champions to the top spot of the English Premier League on Sunday. Early in the first half, Jorgen Strand Larsen's unexpected opening goal for Wolves put Pep Guardiola's team behind. 

Josko Gvardiol pulled City even before halftime, and Stones led the away team to a thrilling sixth victory in eight league matches this season with seconds remaining in stoppage time. Wolves, who finished last in the table, said that Bernardo Silva's interference on goalie Jose Sa and Stones' offside should have disallowed the goal.

With 31 games unbeaten in the league since their defeat to Aston Villa in December, Guardiola's team has set a new club milestone as they aim to win the English championship for the fifth time in a row. Only six teams in English Premier League history have won more than 30 games in a row, most notably Liverpool's 44-game winning streak from 2019 to 2020.

After avenging their 2-1 loss to Wolves the previous season, Manchester City has gone undefeated in 11 games across all competitions this season. After just seven minutes, Strand Larsen near the far post received a pinpoint low cross from Nelson Semedo, and the attacker ducked under Stones for a straightforward close-range finish, rocking the champions. 

Why did VAR not rule out John Stones’ goal?

As Stones hammered the header past Wolves goalkeeper Jose Sa, Bernardo Silva, who was offside, had been close to him, nudging him slightly before stepping aside. The goal was really disallowed on-field, and a VAR check followed, albeit this was unclear at the time.
 
After then, referee Chris Kavanagh was dispatched to gaze upon what was occurring from the pitchside monitor. Then, believing Bernardo Silva had not obstructed play, the ruling was overturned, and he gave the goal. The goal stood out because Silva is not in an offside position and is not directly stopping the opposition goalkeeper from making the save.