When Blur effect on menus is enabled, and when a folder on desktop is right clicked the blur dosen't show and weird behaviour occurs. steps to reproduce: go to System Settings > Application Style > Widget Style > Configure > Transparency Tab set the transparency to any value and apply the settings. now create a folder on desktop and right click on it to see the context menu hover over the context menu to see the weird behavior.
*** This bug has been marked as a duplicate of bug 395262 ***
*** This bug has been marked as a duplicate of bug 399680 ***