Quite common when using hand start and some engines more than some others because of port timing.

As Nathan, Grey Beard and downunder indicated an excessive prime will aggrivate this. Some folks deliberately prime to this state and always start by reverse bumping of the prop on certain engines. Some can even be started by just reverse twisting by hand of the prop spinner. I do normally recommend however for newer folks to use a starter as they become more experianced with their engine they can try other methods.