After Eleanor attempts to cut open Patricia's teddy bear, a bandage can be seen on her finger when she's outside talking to Michael. She does not have this bandage on her finger when she's having margaritas earlier in the episode.
When Tahani visits her sister at the Museum of Fine Arts in Budapest, Chidi and two locals speak a few sentences in Hungarian, but it is clear that they don't know Hungarian, because their pronunciation and stress are off.
Tahani Refers to "Scallions" as part of the art installation, as her character is quintessentially English, she would call these "Spring Onions".
When Eleanor is upset that her mother is using her fake ID name, she says that her mother stole the identity that she stole. However, Eleanor didn't steal the identity, she invented it.