Table tab doesn't refresh after alter column data type.

CREATE TABLE `t` (
`c` INT(11) NULL DEFAULT NULL
) COLLATE='utf8_general_ci' ENGINE=InnoDB;
-> click t in tree view
-> click Table tab
-> in Query tab, run:
ALTER TABLE `t` CHANGE COLUMN `c` `c` DECIMAL(10,2) NULL DEFAULT NULL FIRST;
-> click Table tab
-> click Refresh button, but Table tab doesn't refresh and keep "... INT ..."