About folder reshare and unshare

hello , i have a problem in folder sharing
lets pretend that im user A, i share a folder to the user B, and then user B reshare this folder to user C.
after that ,i unshare this folder to user B ,but user C is still enable see this file .(while i this share will not display on my "shared folder"list…
i want to know ,what can i do that while i unshare a folder to another, it can also unshare to everyone that this one secondary shared to .

Sorry i do not use this feature. But perhaps this is a bug. Perhaps you can create an issue.