Why does this happen?

[Maintain]

Why does this happen? When I am not signed in, I am on Desktop mode, but, when I sign in, I am on Mobile mode. Could someone tell me why this is happening?

Before signing in: http://puu.sh/9p3RU/9b50871eb8.png

After sigining in: http://puu.sh/9p3Tt/00554d1e7b.png

 

[Seven]

http://www.forumkorner.com/usercp.php?action=options
Go there, change Board Style to Default.

 

[One]

Yeah this happens to me because I only use mobile. Usually I log out and login a few times then it'll return to normal.

 

[Maintain]

http://www.forumkorner.com/usercp.php?action=options
Go there, change Board Style to Default.

Thanks you so much, bro! It worked.