Version: unspecified (using KDE 4.5.0)
One of the best features i liked in lancelot is no-click activation. You just hover the button and menu is open.
IMHO it's gonna be nice to have such option to shelf plasmoid too.
Reproducible: Didn't try
It existed some time ago, but there were problems with the behaviour. I'll try to find a way to restore this functionality.
SVN commit 1188380 by ivan:
The shelf applet can again show on hover, and can have a custom icon
M +1 -6 LancelotPart.cpp
WebSVN link: http://websvn.kde.org/?view=rev&revision=1188380