anthonyfieroni added a comment.
Is that configurable (Window decorations -> ^ Draw separator between titlebar and a window ? REPOSITORY R119 Plasma Desktop REVISION DETAIL https://phabricator.kde.org/D25728 To: filipf, #plasma, #vdg Cc: anthonyfieroni, broulik, ngraham, plasma-devel, LeGast00n, The-Feren-OS-Dev, jraleigh, fbampaloukas, GB_2, ragreen, ZrenBot, alexeymin, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, ahiemstra, mart