Wrong position when adding BBCodes with accesskey in IE

When using accesskey for put BBCodes around a selection in IE8, BBCodes are inserted after the selection.

Exemple for reproduce this in IE8 :

Write "Hello everyone" in textarea and select "everyone". Then press Alt+B for use bold BBCode. Now text is :

Hello everyone[b][/b]

Repeat operation for "Hello" and text become :

Hello[b][/b] everyone[b][/b]

This exemple works fine on Firefox, Chrome and Opera. The same text after the same operation is :

[b]Hello[/b] [b]everyone[/b]

I didn't tested on IE7 or IE6.