the "Save and Close" got applied again for all settings with a minimal deepness of 2. Meaning question editing, subquestion editing and answer editing.
A close button isn't necessary. Just close the page, or open anotherone, or hit the backbutton to leave.

I disagree. I don't think it's good practice to ask a user to use their back button or other navigation to exit a page without making changes. I think it needs a "close" or "cancel" button that returns them to the question overview.

In my opinion, the close button is not necessary. But since my opinion is only one of many, and many said they want it back, it's back now.

Fix committed to develop branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=25376