Pressing a number while hovering over an item in the creative search menu types the number

Pressing a number while hovering over an item in the creative search menu types the number mistakenly rather than moving the hovered item into your hotbar. This behaviour did not exist in 1.21.1, but exists in 1.21.4.

(Obviously, you should still be able to type numbers into the creative search menu whilst not hovering over an item)