Corrected entry: When Allison hugs Luther, a shot from above shows that there are no people around, but in subsequent shots there are lots of people.
Continuity mistake: The amount of blood on Allison blouse decreases after Vanya cuts her throat.
We Only See Each Other at Weddings and Funerals - S1-E1
Trivia: The book of Vanya is signed by Gerard Way, creator of the original comic book series.
Correction: This is an artistic choice, not a mistake. Similar to the scene in season 1 when they dance, the director deliberately has only them to show that they are entirely focused on one another.