The fairy godmother casts a magic spell on Cinderella's eyes presumably to dry her tears. However, when the spark fades away, Cinderella's tears are still visible until she removes them with her hand.
When Cinderella asks her stepmother whether or not she'll be allowed to try on the glass slipper, Cinderella's orange earrings appear bright blue during one shot, before reverting to their normal orange in the next one.
Cinderella's clothes and transport-vehicle and crew transform into their original selves at the same time, but her glass slippers remain as they were a moment before when they should have become ordinary shoes with everything else.