This episode starts off playing on how much junk food Raj has been eating. When Raj sits down with Howard, Penny and Leonard to eat their Chinese takeout (Raj ordered steamed broccoli) Leonard acts surprised and says to him "the last green thing I saw you eat was a skittle." Even if that were true, the surprise seems out of place since in just the previous episode while at lunch in the university cafeteria Raj pointed out that he was eating Kale with Leonard sitting next to him.
After cleaning the toilet with Issabella, Raj takes off his rubber gloves and puts them on the floor. Raj continues to talk to Issabella and in a wide shot the gloves are missing.
When Sheldon, Amy and Bernadette are in their apartment, Sheldon tells Bernadette he didn't make her walk up four flights of stairs for nothing. It is only three flights of stairs, which Sheldon would know. It was also stated in S12E5 when Penny thought it was four flights but was proven wrong.