Please consider opening system databases from the server in Domino Admin Client and Notes Client in one machine. Whenever we open system databases they are opening in either Domino or Notes Client.
Steps to reproduce:
1. Open Domino Admin client first
2. Open Notes client
3. Open Domino server - log.nsf on Notes client, nothing happen, log.nsf did not launch but no problem opening mailbox.
It happens in all version of Domino Admin and Notes Client.