SUMMARY
This technical document covers a know issue with Strategy 10 Enterprise Manager, when Operation Manager (OM) is running on a browser directly on the Operations Manager machine and when OM is installed on Unix/Linux operating systems.
SYMPTOM
In Strategy 10 Operations Manager installed on a Web Application Server running on Unix/Linux (e.g. RHEL 7 with Tomcat) and accessing Operations Manager through a browser on the same Operations Manager machine, the button to disconnect from the Enterprise Manager Warehouse does not work.
The above mentioned "Disconnect" button can be observed in the following screenshot, marked in red:

CAUSE
This is a known issue, limited to browsers running on the same Operations Manager machine when Strategy Operations Manager is running on Unix/Linux operating systems.
WORKAROUND
Connecting to Operations Manager from any browser outside of the Operations Manager machine allows the use of the "Disconnect" button normally.
ACTION
This issue has been logged with Strategy Internal reference number DE18375. Contact Strategy Technical Support for an update on this issue.