Always set the "rwmb-$field_type" as the 1st class of the field. Othe…

…rwise, it breaks the CSS selector for cloning. See #981
wpmetabox · Sep 30, 2016 · 160057f · 160057f
1 parent be6d89c
commit 160057f
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/inc/field.php b/inc/field.php
@@ -303,8 +303,8 @@ public static function normalize( $field )
 			'attributes' => array(),
 		) );
 
-		$classes = array_merge( (array) $field['class'], array( "rwmb-{$field['type']}" ) );
-		$field['class'] = implode( ' ', $classes );
+		$classes        = array_merge( array( "rwmb-{$field['type']}" ), (array) $field['class'] );
+		$field['class'] = trim( implode( ' ', $classes ) );
 
 		return $field;
 	}