Night of the Sentinels: Part 1 - S1-E1
Continuity mistake: When Jubilee is first seen eavesdropping on her foster parents, you can see the shelves of their entertainment unit are empty. Moments later when her foster mother is questioning if Jubilee is really a mutant, her husband shows her what Jubilee did to the VCR just by touching it, and you can see the bottom two shelves now have items on them. Additionally, the coffee table goes from having a blue top with a brown border within it, to being a solid brown top altogether. (00:01:39 - 00:02:17)