Revealing mistake: When Andi walks into the library (this is not Andi's dream) it cuts to the librarian sitting at her desk and we can see the shot is flipped - note the bookcase and the librarian's buttons. (00:10:40)
Visible crew/equipment: At the start, while Bex and Ham are talking about Andi's real father, Andi comes downstairs to ask if she can have the disco ball, and in the overhead closeup of the ball we can see the reflection of the automated camera as it turns its lens toward the mirrored ball. (00:00:45)
Visible crew/equipment: After Andi is given permission to leave school with Bowie, when they both walk out the school's front doors some filming equipment and the large reflector screen are reflected on the glass doors. (00:05:00)
Visible crew/equipment: When the "pizza delivery guy" rings the doorbell Bex gets up, and just as Andi gets up we can see the bulging outline of the hidden bodypack transmitter and its wire on Andi's back. (00:22:45)
The Snorpion - S2-E5
Visible crew/equipment: After the show's intro, during the basketball game Buffy gets TJ's attention yet he deliberately ignores her, and in a following shot from behind Buffy the bulging outline of the hidden bodypack transmitter can be seen on her back, under the jersey number 23. (00:02:25)
Continuity mistake: When Andi tells Buffy and Cyrus about the one date with Walker, she gives Cyrus the clear cup with a red design and Buffy gets the green cup, but when Buffy insists that she's the sassy friend those two cups switch between shots, then the cups switch back again. (00:13:50)