As can be seen from the screenshot models on the Recipe Book GUI tabs don't render correctly.
Basically they're ignoring z positioning of the elements instead rendering models bottom to top procedurally through the JSON file structure (i.e. the highest element is at the back of the rendered model).
You can see an example of simple model (black square with coloured dots) replacing the compass in the hotbar and you can test it with the simple model resourcepack zip attached.
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Done. Simple 5 element compass model to show the issue.
EDIT: Tidied up the issue to not refer to a HD resourcepack to avoid confusion.
Could be caused by the fix for MC-115838. What do you mean by "partly" though?
Reordering elements in 3D models JSON files is not a good way to fix the issue, it just hides the problem.
Looks like the bed issue has been fixed by editing the model itself (in MC-115838 the black dot is a bed foot which should be hidden)
If Sphax is correct about the nature of the MC-115838 fix you are talking about, then that should have had no bearing on my partially fixed claim. What I meant by "at least partly" is that for my particular resource pack the previously affected model is no longer rendered out of order in the recipe tabs, (though it still is in the advancements tabs (MC-85134). (The model was not updated in between, and going back to 17w18a causes it to be affected again.) I was not comfortable claiming the bug "fixed" unequivocally however, as I am was not convinced this would have solved every instance of the problem, particularly as someone had already (tried) to mark the version affected.
migrated
Can you please attach a resource pack which can be used to reproduce this easily (if possible use an example where it is very obvious).