During the lighthouse attack, the cup in The Eye's hand keeps swapping from left to right.
Karaoke did not exist yet, not even in Japan, when Oliver Bird was frozen in time during the Hippie era, so any reference to "Karaoke Night" is an anachronism, especially if he's unaware that the braless movement had passed decades earlier.
Cary says that Kerry only ages when she is outside his body, but the first time she appeared when he was 8, she was also 8.
In a voiceover, Syd mispronounces the word "golem," confusing it with "Gollum."