There's been a bigtime oopsies going on since we introduced Meat-Shaped Colliders. It's been brought to my attention through watching people play the game that sometimes meats will fall through the container or burst out the sides when playing with Meat-Shaped Colliders turned on.
I spent a lot of time trying to fix this, and finally came up with a new solution. So, everybody who has been playing with Meat-Shaped colliders will now be moved over to Composite Colliders which are still way more meat-shaped than circular, but not quite as good as Meat-Shaped. But, they do have the advantage of staying in the jar and not popping out the bottom.
Enjoy!