FIA race director Charlie Whiting admitted feeling "perplexed" by Ferrari's pit-stop blunder at the Bahrain Grand Prix last weekend.
The rear-left tyre of Ferrari's car was not fully fixed on, meaning Kimi Raikkonen hit his mechanic in a race that proved problematic for the franchise.
The Drivers' Championship this year has already seen three drivers having to retire from Grand Prix events.
Haas had their issues at the Australian Grand Prix in Melbourne when Kevin Magnussen and Romain Grosjean fell victim to pit-spot failures.
And now issues have spread to Ferrari, affecting Raikkonen's left-rear tyre.
And Whiting was left in disbelief about the whole situation surrounding recent pit-stop problems.
“The two instances in Melbourne were quite clearly wheel gun operator error,” Whiting told the Daily Express.
“They cross-threaded the nuts, thought it was tight, came off, then realised a little bit too late that it wasn’t.
“The guy hadn’t even taken the wheel off [before the car was released] which is slightly perplexing.”
Raikkonen's pit-stop faults also put one of his mechanics Francesco Cigarini in hospital following an accident with the Finn's car.
Issues haven't just been restricted to the 2018 season, with problems occurring back in pre-season too.
Whiting said: “Alonso lost a wheel in testing and we went through it all with McLaren.
“They gave us a report, we discussed it with the Technical Working Group to understand, make sure everyone else realises these things can happen [and] everyone tries to learn from it.”News Now - Sport News