Issue: 
ACL Folder/Directory Access dialog does not display existing directory access control entries, starting in HCL Domino R10 on the Linux platform. 
(RedHat Linux, CentOS Linux. We also tried Ubuntu - which is NOT supported - and the issue is also on that Linux distribution, as well.) 
 
As of 2020/06/10, HCL has issued SPR# MOBNBPQQEA. 
 
 
Workaround: 
We can add new folder/directory access entries using the Domino Admin client dialog.  
To edit existing ones, you must SSH to the server, and use vi to edit the folder. 
 
e.g.  
$ ssh notes@mydomserver.com 
<authenticate> 
$<lotusnotes> cd /local/notesadmin/ 
$<lotusnotes> vi FolderNm.acl 
  
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