When Rabbit and Tigger get separated from Pooh and Piglet in Heffalump Hollow, Rabbit is shown walking off with the butterfly net. However, when Piglet and Pooh are discussing the pink jelly beans and realize they are lost, Piglet is holding the butterfly net, which he later uses to capture Rabbit (mistaking him for a Heffalump).
Roo ropes a barrel, runs up and rope is gone.
The number of horizontal thin black stripes on Piglet's pink shirt changes throughout the film. Sometimes it only has eight stripes, sometimes it has nine stripes, and occasionally it has ten stripes.
Early in the movie, Tigger complains that his family portrait is ruined. The portrait appears to show two "adult" Tiggers each side of Tigger himself. However, in The Tigger Movie (2000) it was firmly established that Tigger has no family.