In the first scene, the robber drops his gun a couple times. It ends up on the ground in places inconsistent with where it should have been.
The character of Sharon Finkel refers to herself as "Dr. Finkel." The only diploma displayed is for a Master of Psychology from Central City University. To be considered a doctor in the field of psychology, she would need to have a PhD in psychology (clinical or counseling), a PsyD, or an MD (if a psychiatrist).
When the dinosaur skeleton attacks the Flash in the museum, it roars at him. Since it's a skeleton, it has no lungs or any other parts with which to expel air or make any vocal noise at all.
When Mina (Black Bison) is put in the jail cell she still has all of her jewelry and necklace. No competent police officers would lock her up without first taking away all personal possessions and/or objects that could be used as a weapon.