broulik added a comment.
The idea is fine in principle but Plasma may also set a mask on its panels, noticeably in non-composited case for rounded corners, so when I disable compositing I get borders on all side for regular panel popups REPOSITORY R242 Plasma Framework (Library) REVISION DETAIL https://phabricator.kde.org/D15814 To: mvourlakos, #plasma Cc: broulik, ngraham, kde-frameworks-devel, michaelh, bruns
