Clicking on the search by date (or “Newest”) does not work. The default is to sort by relevance which makes it difficult to find the latest answers. The problem is the button itself. You can hack around the problem by opening the webpage in a debugger and changing the class of the “newest” button to “btn active” rather than just “btn.” This makes both buttons look depressed, which doesn’t look good, but the sort by newest button does actually work when you click on it.
This is something that makes using the search results on answerhub difficult (and if you end up with thousands of hits, impossible) to use. I wouldn’t consider this hack to be an actual workaround so it’s something that should be fixed.
Thanks