Created attachment 167506 [details] KDE 5.27 vs KDE 6.x In KDE 6 "Task Manager" mode does not shows windows names in taskbar anymore. See attached pic. And no tweak found how to re-enable it.
Possibly related to https://bugs.kde.org/show_bug.cgi?id=484283 . I expect if you make your taskbar wider, the names will appear. It looks to me like Plasma 6 drops the window name with a larger task manager button than would be the case in Plasma 5.
Indeed, setting the width to 100px makes the name appear, setting it lower shows only icon. It is a dup.
Fixed in KDE 6.0.4 With landing of https://bugs.kde.org/show_bug.cgi?id=483070