A closed-circuit TV camera housing appears outside the theater for Brian Slade's concert as the shot pans across a queue of fans early in the film. Such outdoor CCTV security and surveillance only became widespread in the mid-1980s, while that particular style of camera housing did not appear for some time after that.
During the "Death of Glitter" concert, the bassist of The Flaming Creatures takes his hands off the bass for several seconds to reattach the shoulder strap during the song "20th Century Boy", but the bassline of the song continues uninterrupted.
When Brian Slade is being introduced to Curt Wild by "Rodney from Elektra", his cigarette is hanging out of the side of his mouth. After a quick shot on Brian, Curt is shown with the cigarette hanging out of the center of his mouth.
During the circus interview (1:05:14), a reporter asks "Is it your belief that all dandies are homosexual?" to which Brian Slade replies, "Nothing makes one so vain as being told one is a sinner." When the next day's newspaper is shown (1:07:42), Slade is quoted as saying "Nothing makes one so bold as being told one is a sinner."