Relates to MC-278360.
Semi-transparent blocks(slime block, honey block, stained glass, etc) are opaque in front of the recipe book UI and render the part blocked by them when it is behind these blocks, whereas most other GUIs don't render like it.
Steps to reproduce:
Grab a honey block in your inventory
Hold it in front of the recipe book UI
This issue has been fixed in 25w16a.