The bug

When searching the creative menu, items are supposed to be filtered by all text in their tooltip. This already works for several things:

Enchanted book enchantments
Potion effects

However, it fails to work for the following things:

Attributes (such as netherite's "knockback resistance", or weapon "attack damage")
Music disc descriptions (such as "C418 - cat")
Banner patterns (such as "creeper charge")
Firework descriptions (such as "flight duration", or "small ball")

How to reproduce

1. Search "knockback"
→ You get results for knockback enchanted books, but not netherite armor