Data Cell Access Security (Slice Security) has stopped working after we upgraded to OS v8.5

Hi,

After we recently upgraded to V8.5 , it seems the slice security has stopped working.

Can anyone suggest what would have gone wrong? Cube Data Access Security for Entity is True

The parameters are set as 

User is in group and Data cell in the Filter -> Apply access and stop (Read Only)

User is in group and Data cell is not in the Filter -> Apply access and continue (No access)

User is NOT in group and Data cell is not in the Filter -> Apply access and continue (No access)

In the Account filter , am passing 1 account say Sales but when am checking the access , user is able to access all the accounts. There is no other security available in this particular base cube other than this