If Internet Explorer detects that a web page is not compatible, the address bar displays the Compatibility View button. When you turn on Compatibility View, the Web site open appears as if you were using an earlier version of Internet Explorer.
However, this is an emulation of an earlier version of Explorer, which creates additional display problems when compared with other browsers like Firefox and Chrome.
The solution to this problem is to disable the choice (sometimes automatic) browser by entering this meta tag
<meta http-equiv="X-UA-Compatible" content="IE=edge">
In Liferay , this meta is to be included as soon as the first command after <head> portal_normal.vm within the file that is located in the Templates folder of the theme used.