This should be marked as WAI because I didn't realize there was a button to clear the text bar with.

Summary: When typing in the search bar in your inventory, it works, right?

The issue is, once you've typed in what you want, you cannot change it to something else. For example, if I typed in "creeper spawn egg" and then if I wanted it to be "skeleton spawn egg", it goes back to being "creeper spawn egg". The only way to put it back to default is to save and quit every time (which gets annoying when you have to do this a hundred times).

How to reproduce:

1. Load a world
2. Open your inventory in creative
3. Look for the search bar in the recipe book
4. Type something in
5. Close your inventory and back
6. Try changing the text to something else
7. Close your inventory and back (again)

Observed Result: It goes back to where it was before it was changed.

Expected Result: It should be the text you had before you exited your inventory.

It never happened before 1.16.20, 1.16.21, or 1.16.40, and it doesn't happen on other devices either.