https://bugs.kde.org/show_bug.cgi?id=451151
--- Comment #3 from Adam Fontenot <adam.m.fontenot+...@gmail.com> --- I tested and was able to reproduce this on different hardware with a separate KDE installation. It's not consistent, even on my hardware. The bug seems to appear when a resize operation occurs on the window preview bitmap of a particular size. Certain amounts of resizing cause the gap to appear, others do not. In the following screenshot, you can clearly see that it *is* a gap that appears, not just a line. You can see hints of the background image (one of the default KDE wallpapers) behind the window: https://i.imgur.com/yrZ3CXY.png -- You are receiving this mail because: You are watching all bug changes.