STEPS TO REPRODUCE 1. Open two windows of the same browser (tested with chromium and firefox) 2. play music or a video in both windows 3. click mute on one of the windows in task manager OBSERVED RESULT Both windows are muted EXPECTED RESULT Only the selected window is muted SOFTWARE/OS VERSIONS KDE Frameworks Version: 5.66 Qt Version: 5.14.1 ADDITIONAL INFORMATION "Sound playing" indicator/button is shown on all app windows if at least one of them is playing sound. Which might be the cause/related to this issue.
*** This bug has been marked as a duplicate of bug 409980 ***