Scooby-Doo and the Witch's Ghost (1999)

Plot hole: Sarah Ravencroft's ghost causes a turkey to grow really big. When Thorn casts the spell to imprison Sarah again, the spell also causes Sarah's magic spells to be reversed. After Sarah is imprisoned, the turkey is still super big.

unkajes ★

Continuity mistake: When they go to the famous writer's hometown, the mayor is taller than the writer then later he is shorter than him.

Factual error: When the gang follows Ben Ravencrift home, they cross over a long bridge supposed to signify Brooklyn, but is in fact, The Golden Gate Bridge in San Francisco.