In case of ANSI_QUOTES, identifiers quoted with double quotes, and not with backticks.
OK_SIMPLE_STMT(Stmt1, "SET @@SESSION.sql_mode='ANSI_QUOTES'");
CHECK_DBC_RC(Hdbc1, SQLGetInfo(Hdbc1, SQL_IDENTIFIER_QUOTE_CHAR, &Info, 0, NULL));
IS_STR(Info, "\"", 2);
cBasically it's been fixed in scope of work on other issue, but yet to be pushed.