I make a build from source of 4.10.2 samba on a centos7 server;

I create a group named group1, and add a user named user1 to the group1;

i create a shared directory named common;

then run
 chmod 750 -R common;

setfacl -m g:group1:rw -R common

then; 
  start the smbd server;

on an windows, when i access the sharee, i can access the common content;

then, i run ; 

  gpasswd -d user1 common;

now , on windows , i can still browse the content. why?

i use smbclient and smcacls tools to check , they looks ok..

but on windows client, i can still browse it... very strange , 

any solutions is appreciated. thank you