Continuity mistake: The doctor tells June that she needs stitches. He walks away offscreen and his reflection shows that he immediately kneels down. From a different angle, he is standing, walking several meters ahead, and he doesn't kneel after several seconds later.
Women's Work - S2-E8
Continuity mistake: Nick picks up the letters that he hid in his trunk, and there are a lot fewer letters than originally shown.
Continuity mistake: In some scenes it's Winter and then the next scene there are leaves on all the trees and flowers in flower pots.
Continuity mistake: When Offred watches her daughter asleep the girl's head is turned to the left, then for a brief shot it swaps to being turned to the right. Then back to the left for the rest of the scene.
Continuity mistake: When she is standing in the closet you see she still has the tag on her ear, even though she cut the top of her ear off in a previous episode. (00:23:08)
Suggested correction: There was a clip showing her having it put back on when she was recaptured before.