Continuity mistake: When Kath is explaining about Kim's room being turned into an exercise room, her headphone cord changes depending on the shot.
Continuity mistake: When Kath introduces Kel to Kath, his man-bag under his arm changes depending on the shot.
Continuity mistake: When Kath is out on the streets, it keeps switching from day to night.
Continuity mistake: When Kath and Kel are on the escalator at Fountain Gates, the old woman behind them disappears between shots.
Continuity mistake: When Kath, Kim, Kel and Sharon are eating dinner at the restaurant, the food on their plates and the position of their plates changes.
Cactus Hour - S3-E1
Continuity mistake: When Kath, Garry, Kim and Sharon are on the tram, Kath sends Kel a message and sends an attached picture, which Gary ruins. Later, when Kel receives it the photo is different, because now Kath has a surprised look on her face. She didn't appear that way before.
High and Dry - S3-E6
Continuity mistake: When they are all sitting at the coffee table waiting for the ads, the cups and Chinese boxes keep changing positions, and the handle of the Chinese box on the edge of the table keeps going from up to down, depending on the shot.