Large slime cubes are able to jump out of the void and cannot die this way. Also, if they are partially stuck in a block but there is air directly above it, they will be able to jump out of it and suffocate. I'm not sure if this is a bug but it is worth bringing up.
Comments 7
Creative mode, on super flat mode. Destroy dirt blocks and bedrock to expose the void. Get a slime spawn egg or wait for a slime to come, and let it fall in the void. It will usually jump out.
Is this still an issue in 1.4.5?