Double clicking the notifier icon often doesn't bring up octoxbps main window.
This seems to be a session-dependent issue. During some sessions it works, during others it doesn't. I don't think I ever encountered a session where the behavior changed one way or another.
I'm not sure if years ago the issue never occurred, but since quite a while it happens most of the time, or at least 50% of the time.
I haven't figured out why it happens or why it it inconsistent.
During sessions this issue is present I have to use right-click to get to the menu to open up the main window.
Closing the notifier und re-starting it doesn't solve the issue during "affected sessions".