I'm running Opera 39 on Linux Mint 17.3 Cinnamon.
I have just posted a question regarding saved passwords. I used the search function for "saved passwords" but it simply returned me to the Overview screen.
For a laugh, I searched for "Firefox", and it worked, so I searched for "password" and again it worked, showing my post and several others with the same problem. Again I searched for "saved password" and again I got the overview screen.
It's a little bizarre to think that a web browser publisher can only handle one search term at a time ... Can someone please look into this?