2 instances of fckeditor in firefox11

In my admin panel I have 2 instances of fckeditor (2.6.4), but in ff11 the second instance isn't visible. In other browsers (including ff10) don't have this problem. $oFCKeditor = new FCKeditor('ps_short_description') ; $oFCKeditor->Width = '600'; $oFCKeditor->Height = '300'; $oFCKeditor->BrowserPath = SHOP_WWW_PATH.'/upload/fck_files'; $oFCKeditor->Value = ""; $oFCKeditor->Create() ; $