We noticed while playing on the Switch yesterday that hunger points are not accurately being accounted for, details below:

In all instances we found, "consuming" food would award the display properly of hunger points as it was supposed to, but in the coding background it would not always actual register.

One way we could tell when the issue occurred:  food was consumed, hunger points, were restored, but food item stock was not depleted.

Another way we could tell when the issue occurred:  food was consumed, hunger points were restored to within 1 point of maximum, yet health did not regenerate.

In both cases, attempting to eat another food would correctly remove the previously awarded hunger points to show what the game had actually registered.

We have found in our gameplay that this issue is currently occurring 100% of the time with Cooked Mutton.

We have also attempted Potatoes, Carrots, Raw Chicken, Raw Mutton, Raw Beef, Raw Porkchop.  Sometimes each of them would work, and sometimes they would glitch with the above outlined bug.

Edit (more details of what we tested / observed):

-These were not during periods of lag or chunk loading; they were during seamless gameplay.
-Food was properly and fully consumed (as acknowledged by the awarding of the hunger points).  Sometimes even eaten without letting the button go so that multiple were eaten back-to-back.
-All unnecessary Minecraft video options were disabled.