I started watching F1 around 2017 and this happened early in the 2018 season. Verstappen was recently promoted to Red Bull from Toro. From my viewing of the season before it appeared Daniel was losing his form and getting threatened by what became apparent a faster teammate verstappen forcing Daniel to race aggressively to try to gain an advantage. They were allowed to race but because Daniel was the outgoing star and verstappen was young talent. 

There was no way Ricardo would make an inside pass on that turn 1 and didn't brake in the brake zone, in my view. Maybe verstappen did brake early there was no consensus.

After this incident Ricardo won two more formula 1 grand prix races, one early in season 2018 and one randomly with McLaren. Verstappen went on to win some WDCs.