The taskbar tooltips of windows now show the window title and the virtual desktop it is on. It would be very handy if the tooltip would also show on which activity/ies a window is. I for myself work with at least two activities at the same time and sometimes unnecessarily switch between them (which is a bit expensive on my aged hardware and is annoying regarding the workflow) because I can't see easily to which activity a window is linked. The following is technically not related, but the tooltips and the button action could be implemented at the same time: https://bugs.kde.org/show_bug.cgi?id=261649. Reproducible: Always
Patch proposed in https://git.reviewboard.kde.org/r/110176
Commited patch: https://projects.kde.org/projects/kde/kde-workspace/repository/revisions/2ac45a07d6f4d5732219677795d0d280d2549956
Plasma 5 does this.