Thank You very much but, this is not about how to install updates however this is about some consequences after an update that affected GUI; specifically, the text area of the Cortona search. Look in the attachment. If you could see the kind of a shadow that appears in the text area.
Windows 10 lets you choose when and how to get the latest updates to keep your device running smoothly and securely. To manage your options and see any available updates, select the Start button, and then go to Settings > Update & Security > Windows Update > Check for updates. Install any available updates, and then restart your computer if the updates require it.