Cannot translate page in xwiki-1.1.1

When you translate a page to another language, the original page is modified instead.

I think the problem is the hidden field language in the form because if I change it with firebug, it work well.

I have test this bug with version 1.1.1 and 1.2M1 so there is no version on the website without the issue.

There is a discussion here: http://www.nabble.com/Cannot-translate-page-in-xwiki-1.1.1-tf4645706.html