Hey,
Inside plasma5 it is impossible to interact with ring using the system
tray. No right click nor left click can open the ring application again
or shows a context menu. The bug is also reported at plasma side
[362556].
It looks like the problem is not at plasma side only and the plasma
developer suggested, that ring should witsch to updated SNI [1], to
solve the problem at application side.
Regards,
sandro
[362556] https://bugs.kde.org/show_bug.cgi?id=362556
[1] https://www.freedesktop.org/wiki/Specifications/StatusNotifierItem/StatusNotifierItem/