fatal error trying to create a smart group from search build with 'is empty' criteria

steps (taken on demo)
1) create search builder search - use 'gender is empty' as the criteria
2) attempt to create a smart group from the results

Database Error Code: Data truncated for column 'operator' at row 1, 1265
Additional Details:

Array
(
[callback] => Array
(
[0] => CRM_Core_Error
[1] => handle
)

[code] => -1
[message] => DB Error: unknown error
[mode] => 16
[debug_info] => INSERT INTO civicrm_mapping_field (mapping_id , name , contact_type , column_number , grouping , operator , value ) VALUES ( 2 , 'gender_id' , 'Individual' , 0 , 1 , 'IS EMPTY' , '' ) [nativecode=1265 ** Data truncated for column 'operator' at row 1]
[type] => DB_Error
[user_info] => INSERT INTO civicrm_mapping_field (mapping_id , name , contact_type , column_number , grouping , operator , value ) VALUES ( 2 , 'gender_id' , 'Individual' , 0 , 1 , 'IS EMPTY' , '' ) [nativecode=1265 ** Data truncated for column 'operator' at row 1]
[to_string] => [db_error: message="DB Error: unknown error" code=-1 mode=callback callback=CRM_Core_Error::handle prefix="" info="INSERT INTO civicrm_mapping_field (mapping_id , name , contact_type , column_number , grouping , operator , value ) VALUES ( 2 , 'gender_id' , 'Individual' , 0 , 1 , 'IS EMPTY' , '' ) [nativecode=1265 ** Data truncated for column 'operator' at row 1]"]
)

this sql seems to fix

ALTER TABLE `civicrm_mapping_field`
CHANGE COLUMN `operator` `operator` ENUM('=','!=','>','<','>=','<=','IN','NOT IN','LIKE','NOT LIKE','IS NULL','IS NOT NULL', 'IS EMPTY', 'IS NOT EMPTY', 'REGEX');

The last 3 are additions