Index: mantisbt/core/columns_api.php
===================================================================
--- mantisbt/core/columns_api.php	(revision 5503)
+++ mantisbt/core/columns_api.php	(working copy)
@@ -123,10 +123,12 @@
 	 * @returns The array with all column names lower case.
 	 */
 	function columns_string_to_array( $p_string ) {
-		$t_string = str_replace( ' ', '', $p_string );
-		$t_string = strtolower( $t_string );
+		$t_string = strtolower( $p_string );
 
 		$t_columns = explode( ',', $t_string );
+		for($i = 0; $i < count($t_columns); $i++) {
+			$t_columns[$i] = trim($t_columns[$i]);
+		}
 
 		return $t_columns;
 	}