It will sometimes work and it will sometimes not. I would suggest that instead of exiting out, you just minimize the tab. It is what I do. You may also want an easy to remember password if that is your problem. You might want to put a suggestion into the new features on the PDB (my short way of saying Pokemon database.) I would vote it up because I am sure it is annoying for users with siblings who use this site (my brother thankfully just uses serebii, although this site is much better.) I'll keep this in the comments because you asked PM (Pokemaster.)