MyBB Community Forums

I've successfully upgraded my forum to the latest version. But now it's UI is a little awkward in the Internet Explorer 11 browser. I can't scroll any page using PgUp/PgDown or a middle mouse button. Also all of a subforums are shown on a separate line:

Also the CKEditor is missing in the IE while in the Firefox it's working almost fine (can't upload images by copy/paste, they are embedding as a trash into the text message).

Fixed. The problem's root was an IE compatibility mode where I've added 1.6 forum to make it work more or less properly. 1.8 have fixed those inconsistencies & now is working well in a default mode.