**REPORTED** Shell Duplication.

[Flesh Acorn]

Steam or GOG

Steam

Single Player/Multiplayer

Single

Operating System

Windows 10

Terraria Version

1.4.0.4

Controls Used

Keyboard/Mouse

Hammering a platform 3 times then placing a shell on the platform causes the shell to duplicate.

 

[ppowersteef]

Can confirm:

It's likely already reporting before by searching through the threads here.