After update Magento 2.0.0 to 2.0.2 by using composer, messageManager does not working correctly.

[jeffrey_wang]

After update Magento 2.0.0 to 2.0.2 successfully by using composer, I can not get any error message or success message.

Example: I login with wrong login information, the error message "Invalid login or password." does not appear.

When I turn version 2.0.2 to 2.0.0, the messageManager is working again.

[jeffrey_wang]

But I install 2.0.2 directly, the messageManager works correctly

[jeffrey_wang]

I find the issue, there is some error on My Theme's  style.less and It has not been compiled successfully.

It maybe cause that Magento_Theme has not been compiled successfully.