React Navigation back() and goBack() not working

I'm trying to go back two screens. The goal is to go from EditPage to Cover. Here is my navigation stack:

Main -> Cover -> EditCover -> EditPage

I read the docs and it says to supply a key of the screen you want to go back from, here's my code:

this.props.navigation.dispatch(NavigationActions.back({key: 'EditCover'}));

I've also tried (with no luck):

this.props.navigation.dispatch(NavigationActions.back('EditCover'));
this.props.navigation.dispatch(NavigationActions.back({key: 'EditCover'}));
this.props.navigation.dispatch(NavigationActions.back({routeName: 'EditCover'}));
this.props.navigation.goBack('EditCover');
this.props.navigation.goBack({key: 'EditCover'});
this.props.navigation.goBack({routeName: 'EditCover'});

The funny thing about all this is that I get no errors. Nothing happens when the code is called...

P.S. If I want to just go back one screen, this code works fine:

this.props.navigation.goBack(null);

P.S.S. In case someone comes across this before there is a solution. This hack works for now:

this.props.navigation.goBack(null);
this.props.navigation.goBack(null);