ngraham added a comment.
Alt-F4 works of course, but for me, without this patch none of the other methods of closing it work. Could it be a Qt regression? I notice that this patch is required on my Qt 5.13 machine, but in my Qt 5.12.3-using VM, the existing code works without this patch. REPOSITORY R119 Plasma Desktop REVISION DETAIL https://phabricator.kde.org/D22543 To: ngraham, #plasma, apol Cc: broulik, plasma-devel, LeGast00n, jraleigh, fbampaloukas, GB_2, ragreen, Pitel, ZrenBot, himcesjf, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart