I have kmail as a launcher. When hovering mouse pointer on it, the big icon in the tooltip is overly pixellated, see screenshot. Other icons are not, only kmail. Using Breeze Dark theme or any other theme does not change the icon. Reproducible: Always Steps to Reproduce: 1. make kmail a launcher 2. Hover the mouse pointer on its icon 3. wait for tooltip Actual Results: The big icon is ugly.
Created attachment 100852 [details] Pixellated icon
This is caused by KMail installing a wrong .desktop file name, which makes libtaskmanager unable to identify the window and fall back to a suboptimal codepath for loading the icon asset. The KMail devs have been informed about this.
now we use breeze icons. So it's ok. Reopen if you see pb in new version 5.3.x Regards