I've been using the cooking pot as steak storage for quite some time now. But animals don't seem to be working correctly, and hunting is problematic at best with the animal AI being a bit buggy right now, so I dropped the pot and went back to canned foods for the time being. The trick I found is you can't put the steak directly into the slot, you have to just drag it to the cooking pot in your inventory and it should auto-fill. If it doesn't work from your inventory, try putting the pot on the ground and filling it that way, then return the pot to your inventory. Works every time for me.

Thankyou for the workaround :)