When "show categories" is set to yes in the inventory, and I have both locked and unlocked copies of an item, only the locked copies are visible. The unlocked copies still show up in quickstock, and unlocking all locked copies will cause them to pop back up, so presumably they're still there - just invisible. If show categories is turned off, both locked and unlocked copies display as normal.

: I guess you locked my topic , so I couldn't reply about my discovery. So here it is! I logged in using Microsoft Edge - I never use that browser, so my inventory was in default mode. I was looking around my inventory for the rest of my locked items, and it turns out there is a category for such items! Who knew? So I guess the reason I couldn't see my locked pumpkins was 'cause the item sort will essentially override the lock tags; stacking and category sort tags are what I use, so the locked pumpkins were buried in the stacks this whole time! Now I removed the locks on my pumpkins, so now I only have 2 locked items! Thank you for your help, Destiny and Bug!

Just tested this again and it still seems to be happening.