I'm Sorry for You, My Friend - S1-E10
Continuity mistake: When Rayna is facetiming with her daughters, the phone/screen goes between horizontal and vertical several times. (03:04:00 - 03:40:00)
Continuity mistake: When Larry Bird hands Marty the pie, Marty takes it with one hand and then grabs it with his other hand. In the next shot, the pie is no longer in his hands and he's seen grabbing it with both hands at once.