Other mistake: During an argument, Maggie's father mentions the border wall being built to keep people from entering the country illegally. This is obviously a reference to the real-life presidency of Donald Trump, but within the show's continuity, his comment doesn't make sense: in "Resist", the penultimate episode of season two, it's revealed that President Olivia Marsdin is literally an alien from outer space, and earlier in the season in "Welcome to Earth", she signed an executive order offering aliens such as herself full citizenship if they so desired it. If she's that tolerant of extraterrestrials, it seems unlikely that she'd be so intolerant of foreign immigrants as to resort to such an extreme action in foreign policy like building a wall on the border.
AKA I've Got the Blues - S1-E11
Other mistake: After Jessica Jones snaps back to reality from her flashbacks as a teenager in the bathroom with the broken marble sink, she receives a text message on her phone from an unknown number. The word "unknown" on the message heading is misspelled. (00:24:00)
Until Sunset, the Full Moon - S1-E7
Other mistake: In Italy, in a mountain home in the Alps, owned by Italians, Zenigata is using a big bottle of sake to cook. Not exactly what you find in 99.9% of Italian kitchens. (00:07:30)
Other mistake: When Matt and Claire are on the roof and Matt says "A dead guy, a guy I witnessed burn to death," Charlie Cox's natural English accent slips through. (00:41:35)