Sealed Lock Doesn't Work?

That's true. However, IDk if it's glitched for untradeable items since that menu saying "once this item is dropped it can't be recovered" pops up.

fairly certain the popup box will remain, but it will not allow you to drop it. In msea during the hackin phase, there were some evil hackers that scrolled ppl's zhelms 10 x 100% helm def then locked it.

needless to say, the victims were stuck with the helms forever (even when they tried to drop it) since the item locks are forever in msea. at least in GMS, they gave you the option to unlock it thru a SC.