When Amy is talking to the groundhog handler, his arms go from straight at his sides, to folded, to straight again between shots.
After Glenn forces Dina to relax in the garden center in a lunge chair and blanket, Dina demands that Jessica give her her walkie-talkie. Dina was still seen to have her walkie on her before Glenn put the blanket over her and was not seen to have removed it.
Garrett tries to cast doubt on Glenn's fatherhood of the embryo he's holding a picture of by saying it looks more like Elias than Glenn. It is later revealed that Elias is Jerusha's (Glenn's wife) brother, so of course there'd be a family resemblance there.
After Glenn puts Dina on rest, he asks for someone to cover for her, to which Garrett volunteers. Amy was on duty that day, is the next highest ranking team member after Dina, and had previously worked as assistant manager in season 1, so she could/should have covered that position temporarily without the need to assign it to an inexperienced floor worker.