Checked your issue, and I'm not sure if that button ever did that, but I can make it do that.
I don't know if I've made myself very clear. That search thingy was working, I used it a bunch of times, now it doesn't.
This is the search that's not working.
If you hover your cursor over the magnifying glass the box expands and you can type in your search terms. I used it because you can search from whatever page you're on, but you don't have advanced search options from there. It's not a big deal if we don't have that search feature, I only thought the problem with the quotes not working properly might be related since something went wrong at the same time.