KDE neon live session. Steps to reproduce: 1. Open some app - like Kate or Dolphin. 2. Drag opened previously app window closely to Calamares desktop entry - so there will be not enought horizontal space for right click context menu to fit in. 3. Hover over Calamares desktop entry and press RMB one or more times. Expected result: Right click context Calamares desktop shortcut menu appears in usual for context menus place. Actual result: Right click menu appears directly under cursor, after second and subsequent clicks - context menu appears in different parts of the screen.
*** This bug has been marked as a duplicate of bug 379635 ***