Near the end, when Edwina is at Dr Santell's residence, Dr Santell lights a cigarette. When he is behind the couch, the cigarette is short even though it's been less than a minute. When he comes around the couch to extinguish the cigarette (and get his gun), the cigarette is long.
When Oliver Duffy is shoved onto the elevated railroad track, there's enough space between the railroad ties for him to jump down. But when seen from below as he's clinging to one of the ties, there's no room for anyone to jump through. The ties are just inches apart.