STEPS TO REPRODUCE 1. Press Print-Button on your keyboard or execute Spectacle program in your menu to start Spectacle 2. Spectacle window opens 3. Press the button "New Screen Copy" (in my German version: "Neues Bildschirmfoto aufnehmen") on Spectacle window 4. Spectacle window disappears; process remains 5. Press Print-Button on your keyboard again 6. Spectacle window opens 7. Instead of "New Screen Copy" the button now shows "Cancel" (in my German version: "Abbrechen") 8. Press button "Cancel" on Spectacle window 9. Button text changes to "New Screen Copy" (in my German version: "Neues Bildschirmfoto aufnehmen") 10. Pressing this button starts at 3. again OBSERVED RESULT s. above EXPECTED RESULT Press button "New Screen Copy" (in my German version: "Neues Bildschirmfoto aufnehmen") should make a new screen copy. Spectacle window should not disappear. SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: (available in About System) KDE Plasma Version: 5.24.4 KDE Frameworks Version: 5.90.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION openSUSE Leap 15.4
Spectacle has been rewritten for the upcoming 23.04 release, the the version you're using is quite old and out of support. So it's likely that the issue doesn't happen anymore or is different in the new version. I can't reproduce it there, so it seems like it has indeed been fixed.