From bleepingcomputer.com
Windows 10 October 2018 Update, otherwise known as Build 1809, has been having trouble with bugs since it was released. While most of the bugs have since been fixed, reports of a new bug related to extracting zip files using Windows built-in zip functionality has popped up.
Normally when you extract a zip file in Windows, and the contents already exist at a location, Windows will prompt you as to whether you wish to overwrite the files. You can see an example of the normal overwrite confirmation prompt below.