Corrected entry: When Prue wonders where the cream is, the little container thereof slides along the table to her. Then the cream drains from the container and burbles up through her coffee. However, that's completely discontinuous with how Prue's power ever worked at any other time in the next three years. The cream should have needed to leap out of the container and into the coffee, simply traveling physically across space.
Corrected entry: The newspaper which you can see Prue holding at the end of this episode (right before she 'half-blinks' to shut the door) has something written on it like yadda yadda yadda 'Doubt Fire' yadda yadda yadda. Yep, thats right, the same newspaper from Mrs Doubtfire.
Corrected entry: Jeremy is a warlock, but he seemingly cannot blink. In all other episodes all warlocks have the ability to blink, but Jeremy had to run all of the way to the manor. While in the episode The Witch is Back, Melinda says that a warlock who blinks must have taken it from a witch, that is not the case for the entire rest of the series where blinking is only an evil power used by warlocks. So either the writers changed their minds about what they wanted "blinking" to be, or they forgot what they had said about it originally, thus making this mistake.
Corrected entry: At the very beginning, we see Phoebe running to the house. Not Piper. The way the episode is edited would have you think it was actually Piper returning to the house. Inspection of the umbrellas they carry into the house will show that the one from the beginning is the same as the one Phoebe brings with her. Piper's umbrella is black with white spots whereas Phoebes is black with a trim around the outside.