Snack Time - S1-E1
Revealing mistake: When Steve skidoos back to the thinking chair, the tree branch is cut off.
Snack Time - S1-E1
Revealing mistake: When Steve skidoos to the farm, there is a white border around the screen.
Blue's Clues (1996)
2 revealing mistakes in Snack Time
Starring: Aleisha Allen, Steve Burns, Seth O'Hickory, Traci Paige Johnson
Blue Wants to Play a Game - S1-E12
Other mistake: The jigsaw puzzle Steve and Blue help Shovel and Pail with has a picture of everyone playing musical chairs from the Mailbox's Birthday episode, but Steve suddenly isn't in the puzzle. He played musical chairs, so he should've been in the puzzle.
What Story Does Blue Want to Play? - S1-E16
Trivia: At the end when Steve sings the So Long song, he's impersonating Elvis Presley.