What’s going on with the Google and the back button???

For the last few weeks, Google seems to have adopted a new way to serve search queries, it seems that they’re using some some of JQuery or AJAX within their results. each time I go back to Google (using the back button) the search query in the input field is wrong, as it’s a former search Query??

Google’s messing up with the fundamental way of web surfing, that cannot be good!