Hi, <br><br>&nbsp; I found that when kwin enables taskbarthumbnail effect, the tooltip can show the preview of windows, but we can't click these preview to activate or iconify the corresponding window. <br>&nbsp;<br>&nbsp; I made two patches.<br>1 kdelibs-palsma-tooltip-previewclick.patch&nbsp; <br>&nbsp; It should apply to the directory&nbsp; kdelibs/plasma/<br><br>2 kdebase-workspace-plasma-tasks-previewclick.patch<br>&nbsp; It should apply to the directory&nbsp; kdebase/workspace/plasma/applets/tasks/<br><br><br>Best regards<br>pwp<br>