Menu Editor does not save changes

When I modify an existing menu item (e.g. change URL it links to) in the channel manager, then close the dialog, changes are not saved.

Sometimes moving the item to a different position in the menu, then moving it back helps.

See video https://drive.google.com/a/1hippo.com/file/d/0B77KkWvvyZdJU01keV9VSHYwQ1k/view?usp=sharing if you have access.

Edit: a workaround is to select another menu item before closing menu editor dialog.