Page with Region Validations bug

In the same test case of previus post i put commit actions.

I noticed that if i have a validation errors in region i cannot submit or commit page.

In the contrary if i have validations on page i can do submit and commit on retion.

These problems are easily fixed if you put partial trigger in page components from region

But even though validations fire, if i dont have validation errors when i commit the region also the page changes are commited. but the page does not know it. The commit button is not becoming disabled.

In order to be more obvious i also added a field from Jobs in the main page.

Then if i change value in the region and press commit in the region the value is returned to the value of the main page.

Is this a bug?

If not, how can i refresh data of main page when i make a change in the region?