Sort by date might still have issues.
I'm using FF.
If you search for something, and Google returns results based on "suggestions" (i.e. "Did you mean...?), instead of what you actually searched for, then switching to Sort by Date causes the resultant output to again revert to the suggested term. Additionally, if you switch it back to your actual term, and then click to page 2, 3, etc. it again reverts back to its suggested term and I think not sorted by date.
A quick way to reproduce is misspell 'Gottlieb'