extratype

Nice! Thank you very much!

enable_file_system_notifications was set true all the time. I had added both root and non-root directories so I was able to compare Sync behavior when I added a file in a directory and modified it. For a non-root directory, the file was synced after a few seconds. For a root directory, I waited for some seconds and it was not synced. So I just restarted the Sync service to force scanning and then the file was synced. Notifications was definitely sent for a non-root directory. I don't think notifications was not sent just for a root directory of the same drive. At least Everything search (https://www.voidtools.com/) was aware of the change.

I'm syncing two D: drives in Windows 10. They are internal HDDs. When I make a change (file/folder creation, deletion, modification), it does not sync soon. I have to wait for folder_rescan_interval. It seems Resilio Sync does not listen to file system notifications. As a workaround I'm syncing every subdirectory at the root.