mart added a comment.
looking into it, i still think the dialog code is correct. what happens is that someone external resizes the notification window to 0x0 pixels wide right after the componentcomplete event. if as in this patch the dialog is resized explicitly in componentcomplete, that other spurious resize (from 0x0 to 0x0 btw) doesn't happen anymore even tough I am still not sure where that resize event comes from (feeling like blaming either windowmanagement tough is weird as is still unmapped or qt xcb), I think a more correct patch, is https://phabricator.kde.org/D6964 REPOSITORY R242 Plasma Framework (Library) REVISION DETAIL https://phabricator.kde.org/D7071 To: matank, #plasma, davidedmundson Cc: mart, plasma-devel, davidedmundson, ltoscano, #frameworks, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, lukas