The previous widget that monitored CPU and RAM usage opens the KSysGuard when clicked.
The new widgets now display a small popup with information about the selected sensors, and this is very useful, but I miss being able to open KSysGuard through the widget.
As it's common on plasma that the panel items have special shortcuts for when they are clicked with the middle mouse button, I believe this behavior can be followed here too.
I confirm, I would like to see similar behavior.
A possibly relevant merge request was started @ https://invent.kde.org/plasma/plasma-workspace/-/merge_requests/674
Git commit 5efae6f4e4019e5e308617fa029e9f6e77e623b5 by Nate Graham, on behalf of David Redondo.
Committed on 30/04/2021 at 00:42.
Pushed by ngraham into branch 'master'.
Add action to open the system monitor from the applet
It's also accessible by middle clicking on it
M +2 -0 applets/systemmonitor/systemmonitor/CMakeLists.txt
M +15 -0 applets/systemmonitor/systemmonitor/package/contents/ui/main.qml
M +10 -0 applets/systemmonitor/systemmonitor/systemmonitor.cpp
M +1 -0 applets/systemmonitor/systemmonitor/systemmonitor.h