See video in URL field for details. In Breeze dark, trying to view the dropdown menu in the "Entries" section of the system tray settings window shows the background as white. Can't ready it. Reproducible: Always Steps to Reproduce: 1. Open system tray settings 2. Go to "Entries" 3. Click the visibility of an item to open the dropdown menu list Actual Results: Background for options are white. Can't read text unless you highlight the mouse over it. Expected Results: options should have dark theme like the rest of Plasma. Tested while running Antergos Linux x64, KDE Plasma 5.5.4.
*** This bug has been marked as a duplicate of bug 343369 ***