I try with webtrees 2.0 same thing.
But if i try to demo the logout as no this message. We stay on the same page.
the problem is may be because all trees are private no acces to visitor?
when i logout i have on the address:
after i try to login again using connexion
i m connect as administrator and i have this message: "La page n’est pas redirigée correctement"
I should write http://localhost:8080/ to enter to my site.
I hope that this is clear and can help you to find a solution.