When Diana looks at the timer after the teaser, she holds it with both of her hands. In the close-up of the timer, only one hand holds the timer.
When Mallory and Rembrandt look over the blueprints, Mallory's intertwined hands instantly change to crossed arms during a cut.
While Diana is getting ready to go on "the date", Rembrandt asks how to get past the safe combination. Diana replies that it is "Just like Windows 95", but Diana's worlds technology was far advanced to the Earth Prime world where Windows itself, let alone Win 95, was a functional language for the computers. Even if Diana's world had a Windows 95, the only one likely to understand what she meant would have been Mallory.