Creative Search Bar not working

Before, the inventory selection would gradually decrease as you added letters into the creative search bar, but now you can't see any changes until you press "enter".

 

Steps to reproduce this behavior:

1. Open another version of minecraft (probably should use 1.14.60 for comparison)

2. Search for an item in the creative menu

3. Open 1.16.0.57 on win10 (not sure if it affects other platforms, but both me and my friend had this glitch on win10 simultaneously)

4. Search for an item in the creative menu

5. Compare the 1.14.60 inventory results and the 1.16.0.57 results.