Item number goes over name in inventory

When you hover over an item in your inventory the name and black box around it is under the item numbers of other items in your inventory

What I expected to happen was...:
The name and black box should appear over the item numbers

What actually happened was...:
The numbers showed up over the name and box

Steps to Reproduce:
1. Go on any world on 20w21a
2. Put items with different amounts in your inventory
3. Hover over an item