Stupidity: During the execution scene when Carina is on the gallows with a noose around her neck, the plot depends on Henry being able to get to her before she is dropped through the trap door. However, there is so much slack in the hanging rope that during the chaotic fighting, when Carina is left unattended, she could easily have stepped off the small trap door and onto the solid flooring that is inches away. Instead, she continues standing there, waiting to be rescued.
Stupidity: A young Jack Sparrow outwits Salazar by tricking him into the Devil's Triangle. Jack uses a bootleg turn to dodge the same fate. However, the film shows Jack's ship within the striking range of Salazar's ship. Salazar could have used a cannonade to both destroy Jack and turn his ship to the starboard side, avoiding the Devil's Triangle. In fact, despite being a naval genius, Salazar did little to escape doom. (01:06:12)
Answer: There was never any explanation other than Elizabeth kept it in the chest. As both the Elizabeth and Will characters are rumored to return in POTC 6, the question may be answered in that installment.
raywest ★