SUMMARY: Spectacle re-open itself on startup if you have made a screenshot in the previous session. It will open 1 window for every screenshot you took. STEPS TO REPRODUCE 1. Start spectacle in background mode. $> spectacle --current --background --clipboard 2. Reboot your computer, note that just logging out will not work. 3. Log in again. OBSERVED RESULT: The spectacle window opened itself and took a screenshot of the login window. EXPECTED RESULT: Spectacle should not run automatically after reboot. SOFTWARE/OS VERSIONS: Windows: macOS: Linux/KDE Plasma: Kubuntu 20.04 (available in About System) KDE Plasma Version: 5.18.5 KDE Frameworks Version: 5.68.0 Qt Version: 5.12.8 ADDITIONAL INFORMATION
This is caused by Spectacle secretly remaining open in the background, which is a bug we fixed over a year ago. However you're using an old version of Spectacle. I would recommend upgrading to Kubuntu 21.04 to have newer versions of KDE software.