When Enzo comes face-to-face with the Huntress, her mouth is closed, but her reflection in the glass between shots shows her mouth open.
When Rayna approaches Julian, Nora, and Mary Lou at the docks, her sword drags along the ground making sparks and a scraping sound. This is impossible, as the sword is at least half a metre too short to touch the ground when held in her upright hand, as is evident in the ensuing shot.