Steve thought the viewers said "a quack" instead of "a clue" when they saw a clue on one of the ducks (the first clue) in the pool in the backyard, even though they did not say anything.
When Steve draws the second duck, he is drawing the first clue again. You can easily tell this as there is no piece of paper above the spiral from the way he is holding it. It is also obvious that it is the footage of drawing a duck from Blue's Favorite Song since the crayon becomes sharper when Steve draws the third clue.
Some of the objects in front of Duarte are cut off in this episode.
After Steve draws the third clue (a goose), the pawprint is still seen on the goose.
When Steve says "Wow, making your own Puzzles that brilliant!" A boom mic is seen for a few seconds.
Steve does not appear in the jigsaw puzzle from Mailbox's Birthday when everyone was playing musical chairs.
During the theme song in the Thinking Chair in Pistas da Blue, (the Portugal version) Blue's tongue turned blue to match her fur, then after Duarte and Blue got out of the thinking chair and ended the theme song, her tongue was pink again.
When everyone was playing Duck, Duck, Goose at the end of the Pistas da Blue version, Tickety's legs are missing.