Continuity mistake: When the living-doll version of Glen/Glenda/GG is revealed, after they thank Tiffany for giving them a makeover, the way they are holding the mirror changes instantly between cuts. This then continues throughout the rest of the scene, with them holding the mirror in a different way between shots probably a dozen times.
Continuity mistake: Episode 1.1 "It's Thursday" The protagonist just came back home. She looks at the picture collage and takes in hand the corner of a photo. She notices a draft of wind moving a curtain and looks in that direction, pulling away her hand. In the next close-up, she is still holding the photo. (00:06:15)