Fagmalion Part Three: Bye, Bye, Beardy - S5-E18
Continuity mistake: Grace lays out some dresses and accessories on the bed, for Will to choose for her to wear. After Will picks up one dress and takes it over to the mirror, the dresses and accessories on the bed change position between shots.
Fagmalion Part Three: Bye, Bye, Beardy - S5-E18
Continuity mistake: When Karen and Beverly are fighting over the clipboard at the silent auction, in one side shot the clipboards on the table are out of place and untidy. In the next shot the clipboards are back neatly in place like before.
Answer: The director, James Burrows.