Adding and updating the description of a CO Extended Attribute works fine on mysql 5.7.17, but altering its name or altering its index setting after creation throws a SQL error like the following:

Error: SQLSTATE[42000]: Syntax error or access violation: 1064 You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'COLUMN atestone TO atesttwo' at line 2

SQL Query: ALTER TABLE cm_co_2_person_extended_attributes RENAME COLUMN atestone TO atesttwo

at

APP/Controller/CoExtendedAttributesController.php line 324 → Model->query(string)