The race started and immediately was very wet, Leclerc decided to put and sent his call in for tyres seemingly once he was in the pit lane already. The team therefore didn't have tyres ready for him. He contests that in weather like that the tyres should be being prepared in case a driver needs to pit.
It seems likely that Ferrari processes will change to allow them to have more agile strategy going forwards.
This is why I keep watching the current season. Ferrari are the masters of unpredictability. You never know how they're going to mess up because they always find new ways to mess up. And to really throw you off once in a blue moon they do a clean race, so you can't expect them to always fail. They're experts at keeping you on your toes, you literally can't know what kind of Ferrari you're going to see on any given weekend.