Cutaways during several different band performances, such as close up of backup guitarists, are from different parts of the shows and often don't match wide shots of the band or shots of the singers.
(at around 9 mins) The clock on the wall goes forth and back in time between shots.
(at around 44 mins) Various items on the table either appear or disappear or move from place to place between shots when Lisa refuses to drink her tea and yells at Matt.
(at around 19 mins) While driving along the dual carriageway, the rev-counter of the car (the large left hand dial on a Mk. 2 Ford Granada) is at 0 showing the engine to be switched off. (In mitigation, it's a very old car so the rev counter could just be broken.)
(at around 11 mins) The boom mic momentarily drops down into the scene and pulls back up while Lisa asks "Do you think I look like a boy?"