Gems Stash tab - All gems populating to Level 1 slot

Hi all, ran into a new issue with the "Gems" stash tab I purchased. All of my gems appear to be populating to the "Level 1" storage slot regardless of gem level. The example I've linked to has a Level 4 gem in the level 1 slot.

Makes things a bit messy and I'm not sure it's intended behavior. Kudos.