Use of LoginView in normal tab

Hii,

By using the login function we can access both the tab(ii.e. the normal tab as well as in the Incognito tab),
but when I use the Loginview class from django.contrib.auth.views the login process is only happening in the Incognito tab but not in the normal tab. Why?

That actually never happens , I would suggest that you try again loging in using the loginview in normal tab . There is no code which effects the working of login view for both the tabs.