Why the hell did the Jedi Council not make Anakin a master?

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Tenaku posted...
Frequent opinion in YouTube comments:

If Anakin had waited in the council chambers until Mace Windu returned after dealing with Palpatine, he would have made Anakin a master right then and there.

Anybody here think so?
windu would have died and anakin would have been killed with all the other jedi when the clones stormed the building.
Taarsidath-an halsaam.
Quando il gioco e finito, il re e il pedone vanno nella stessa scatola