His defiencies were painfully clear when he was in form, and the conditions that allowed him to find that form were exceptionally favourable to a player who wants to monopolise the team's creativity. That benefited him as an individual but it ensured United remained a dysfunctional team. It wasn't the cause of the dysfunction but it prevented any resolution to it.
He essentially used all of the team's risk capital, to borrow a phrase from investing. His team-mates knew that if he was going to be given the ball in a vaguely progressive area, he'd go for the killer ball and either give it away or create a chance.
That made it impossible for his team-mates to take sensible risks themselves, because Bruno was already haemorraghing possession in good areas enough on his own. And it made it impossible for us to play any more subtle, intricate moves in and around the box because Bruno has neither the patience nor the close control to play a big role in it. So their only alternative to letting Bruno do that was to make their own solo moves from poor positions. Invariably we just bounced between one and the other with no cohesion.
It ended up making our creativity more one dimensional in terms of the breadth of players involved and the breadths of moves attempted, and that was exposed over and over again against the bigger teams, regardless of the form he was in. What worked for him was never a workable solution.
Now he's being asked to play a more mature game and those deficiencies become more prominent, it's not an aberration but a logical progression