I noticed today that the pop-up screens for voting to close a question have acquired a new layer. Clicking "close" used to produce a pop-up with checkboxes indicating various reasons for closing. Now it produces a pop-up with only some of those reasons plus a new "community-specific" option. Clicking that option produces another pop-up with the rest of the reasons. Apart from decreasing efficiency and perhaps dissuading me from voting to close, what's the purpose of this change?
Here is a screenshot showing the current look: