When i logout from my WDA, using Exit_plg i have get page(which i have created early). On this page i clear Auth Cookie and delete this session Cookie. Then close Browser.
But when i try login again, in session list i have see, that one session by me is already start. WHen i am exit again and run WDA, fill login and pass, i see two sessions... THen 3... 4.... 5... etc.