It happens to me occasionally. Mostly when trying for "old records" from back when I stuffed a lot more frequently (and as a consequence had a larger capacity).
So far, the closest I've been able to get to my old record of 31 slices of pizza, 10-20 breadsticks (I don't count them), three bowls of pasta, and eight cinnamon rolls is...24 slices, 8-12 breadsticks, two bowls of pasta, and eight cinnamon rolls.
I often find myself wishing that I had my old capacity back...and then some.
10 years