Active Directory group issue on Sharepoint group

Hello Everyone

I have "Homemembergrp" group in Active directory. I added this group in Home members group in sharepoint.

All users from homemembergrp have contributor access on sharepoint, which is perfectly fine.

But now if I remove any user from "Homemembergrp" AD group, it does not reflect this change in SharePoint Home member group.

I am using SharePoint 2013. I never saw this issue before.

Please help me to understand what causing this issue.

Thanks in advance