Chum Bucket Supreme/Single Cell Anniversary - S6-E22
Continuity mistake: In "Chum Bucket Supreme", Mr. Krabs hears the sound of Plankton's cash register, and the wide shot shows him standing on the pavement around the Krusty Krab. In the next shot, he is now standing in sand.
Chum Bucket Supreme/Single Cell Anniversary - S6-E22
Continuity mistake: In "Chum Bucket Supreme", Mr. Krabs notices that there are only two customers in the Krusty Krab. When he goes up to the front window, the customers and their tables have vanished.
Chum Bucket Supreme/Single Cell Anniversary - S6-E22
Continuity mistake: In "Chum Bucket Supreme", Plankton rips up a piece of paper on top of Karen. In a few shots, the ripped paper disappears.
Pineapple Fever/Chum Caverns - S6-E23
Continuity mistake: In "Pineapple Fever", while Spongebob and Patrick are protecting themselves from the elements, the nails and boards on the floor change positions in almost every other shot.
Pineapple Fever/Chum Caverns - S6-E23
Continuity mistake: In "Pineapple Fever", Spongebob re-scrambles the jigsaw puzzle right in front of him and Squidward runs outside. In two shots, when Squidward returns, the jigsaw puzzle pieces have moved to the left on the screen, almost behind Spongebob.
Chosen answer: You need to provide a little bit more information to be able to answer a question like this. In what region is it not being shown? I see it being replayed here in Australia fairly frequently. As for a general reason, there does not appear to be any for why it specifically might have been taken off the air in any country or region. Like any show certain episodes can sometimes not be replayed for long periods for unknown reasons.
Lummie ★