Created attachment 140213 [details] Log file from log viewer SUMMARY On starting application, icon bounces and entry appears on task bar, which is fine. However then they vanish leaving no trace and there is a pause before the application actually starts. STEPS TO REPRODUCE 1. Search the application launcher for Firefox (this is the one where the delay appears most pronounced, though it does also happen for other applications) 2. Start Firefox. 3. OBSERVED RESULT Firefox icon bounces around ten times at mouse location, and Firefox entry appears on task bar. Both vanish at the same time. There is a long pause, and then Firefox reappears. The length of the pause varies depending on which application is being started. This may be intentional, but it looks more like a bug. EXPECTED RESULT Task bar entry and possibly also bouncing icon stay as is until the application actually starts. SOFTWARE/OS VERSIONS Windows: 10, but not using it at present macOS: OSX 10.10.5 or thereabouts, but again not using it at present. Linux: Ubuntu 20.4 KDE Plasma Version: 5.18.5 KDE Frameworks Version: 5.68.0 Qt Version: 5.12.8 ADDITIONAL INFORMATION See attached log. Can't find a way of attaching more than one attachment so unable to include dmesg.
Created attachment 140214 [details] dmesg for a session where the issue happened Attaching dmesg after the bug has been logged.
Does it bounce for 5 seconds? What is the timeout set to in System Settings > Applications > Launch Feedback?
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Yes, it bounces for about five seconds, then everything goes out for some while until it actually starts. I found the setting you mentioned... I didn't know there was any such setting. I've now set it to 60 seconds, and that seems to have fixed it. I didn't see an option for the launch feedback to continue indefinitely until the application started. Setting back to reported as requested by bug janitor.
Cool, glad you found the setting that works for you.