SUMMARY - worked FINE in OpenSuse Leap 15.1 / Plasma 5.12.8, so newly introduced in Leap 15.2 / Plasma 5.18.6 STEPS TO REPRODUCE 1. Move mouse over icons, they "dissappear" 2. move mouse somewhere else, they appear again. 3. click on invisible/disappeared icon, it will re-appear. 4. click 2nd time to execute/open OBSERVED RESULT Thought at first that there are no rules, maybe a graphics card issue (Intel HD graphics). BUT depends on file type: - .desktop, .sh mostly disappear. not all, no further "rule" known. - .pdf and all LibreOffice files stay stable Thought that maybe access rights are triggering issue: no, tried. Also e.g. .png files are mostly dissappearing, so not only executable files. EXPECTED RESULT icons should stable and visible SOFTWARE/OS VERSIONS Linux/KDE Plasma: openuSUSE Leap 15.2 / Plasma 5.18.6 KDE Plasma Version: Plasma 5.18.6 KDE Frameworks Version: 5.71.0 Qt Version: 5.12.7 ADDITIONAL INFORMATION openSUSE bug also exists: https://bugzilla.opensuse.org/show_bug.cgi?id=1175797
*** This bug has been marked as a duplicate of bug 433188 ***