Multiesite Multinetwork Login Issues

I’m running a Multisite install using the Networks for WordPress plugin and one additional network. Everything seems to work great however when I switch between networks/domains the login isn’t persistent. For example if I log in at domain1 and switch to domain2 I have to login again as opposed to already being logged in across all networks after logging in at domain1.

I was hoping someone could point out why this might be happening and a possible solution so it can be fixed.