Are you able to make a Meat Patty using the Crafting menu? It should be an available option if you have ground meat in your inventory and are standing near a crafting surface. Once the meat patty is made it can be cooked, and with that you should be able to turn it into a hamburger.

Please, follow this guide:   

We are working on the fix!

It would be great if we could put meat in jars, same vanilla recipe but with meat. Something like the picture. Love the game btw

I agree, it's annoying. You need to pick up the corpse and put it down, then it will be fixed.