<meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" />

Original ticket: http://tracker.phpbb.com/browse/PHPBB3-8230

The above code was added in order to address the textarea width bug in IE8. This issue has since been resolved in the IE9 beta, which was just recently released. To better assist style authors in using code standards, the code should be changed to the following:

<!--[if lt IE 9]><meta http-equiv="X-UA-Compatible" content="IE=EmulateIE7" /><![endif]-->

IE7 emulation will only be enabled when IE8 is the browser.