https://bugs.kde.org/show_bug.cgi?id=411965
--- Comment #20 from karo...@gmail.com --- I did some more investigation and turned out that I had custom CSS enabled for konsole to more visibly mark the active tab and following CSS broke it in conjunction with QT 5.13.1: QWidget, QTabWidget::pane, QTabWidget::tab-bar { background-color: rgb(45, 45, 45); } I removed it and it is OK now. Sorry for confusion. -- You are receiving this mail because: You are watching all bug changes.