Other mistake: When Phoebe gets the premonition to see all the loss, she sees the scene where Piper dies in All Hell Breaks Loose. Since time was rewound this event never happened in this timeline, and we're never given any reason to believe Phoebe would know this happened after the time reversal.
Other mistake: When Paige is talking to her charge in the club the same guy walks behind them twice in the scene. (00:14:00)
Other mistake: In the kitchen scene, Phoebe adds a mix to a pie crust but puts an empty crust in the oven. (00:04:10)
Other mistake: In both scenes in which Phoebe's hair is cut, her hair is up, with very little loose hair. There is no way that the amount of hair shown to be cut in both scenes could have come from her head. In the first scene, it is very clear when the demon cuts her hair, it is a few tendrils, yet when he is shown with Imara, it is a very measurable amount of hair. The super speedy guy who cut her hair the 2nd time, when she was Imara, was too quick to see the actual amount cut, but again, because of her hairstyle, he could not have cut the amount he shows to the Charmed Ones in the next scene.
The Bare Witch Project - S7-E2
Other mistake: At the end of the episode when Phoebe is on the horse making her lady Godiva speech her jeans show at her waist. When they pan out she is "naked." When she starts to ride away her skin tone underwear shows. They cut away to Paige and Piper and when they come back to Phoebe riding away the underwear is covered by the long blond hair. (00:41:05)
Answer: That was a mistake in the series.
Also, the episode is called 'Babies First Demon' and this alone tells us that it's Wyatt's first time in the field (so to speak) and as the sisters say, they've done a good job of clearing up their own magical messes so far. Nobody really knows how advanced Wyatt's powers are, or will become. That's why the cleaners appear, to nip things in the bud. The Cleaners didn't want to chance that the sisters could clean Wyatt's magic up, just incase they couldn't. Therefore intervening themselves, just in case.