Panels and appstarter are drawn solid, not transparent, after login. Trying logout and login several times *may* result in correct behavior. Package: plasma-desktop-5.7.2-1.fc24 It's tracked and confirmed upstream with a workaround patch: https://bugs.kde.org/show_bug.cgi?id=362531#c7 Restarting plasmashell works for me as a workaround: kquitapp plasmashell; sleep 3; kstart plasmashell
That patch is not really usable as-is, we can continue to track this upstream.