https://bugs.kde.org/show_bug.cgi?id=477791
--- Comment #8 from fanzhuyi...@gmail.com --- Observation (assuming some fractional scaling that can trigger this bug): This gap at the top of the external monitor only appear when there is a top panel in the other monitor set to always visible. In this case, the vertical gap scales with the vertical offset between the two monitors -- the lower the position of the screen with the top panel, the bigger the vertical gap. This issue also disappears when I manually set the two screens to have a gap of 1 pixel between them. These suggest that this bug has the same root cause as 464842 -- under fractional scaling, content on one screen can have an impact on the other screen. -- You are receiving this mail because: You are watching all bug changes.