Beta 14.2.102.1066
Workspace with 1 connection and 2 Editor windows.
After restore Workspace, in 1st Editor window go to "DBMS output" tab and set "Enabled".
Than, in 2nd Editor window go to "DBMS output" tab. And see it is Disabled (unexpected).
Than, open 3rd Editor window, go to "DBMS output" tab. And see it is Enabled (as expected).