Windows 10. Explorer++ v1.5.0.2560 dev (64-bit).
Trying this dev build, I cannot find a way to prevent the list of files auto refreshing. For example, if I rename a file it will immediately jump to its new sorted position. Or if I use WinRar to extract the contents of an archive to the same/current folder, the file list will be re-sorted to include the newly extracted items, rather than the new items appearing at the end of the list (until I manually refresh).
In E++ v1.3.5.531 and v1.4.0.2293 I could prevent this behaviour by going to Options -> Files and Folders, and unchecking "Insert new items in their sorted positions." It was the main reason I switched away from Windows Explorer to Explorer++.