Created attachment 123103 [details]
Screenshot of the issue.
If Breeze Dark is for the Workspace design, while for the rest Breeze Light is used, the icons are displayed in white on the bright yellow background and as such become hardly visible.
Please see the screenshot.
Operating System: Manjaro Linux
KDE Plasma Version: 5.16.5
KDE Frameworks Version: 5.63.0
Qt Version: 5.13.1
*** This bug has been marked as a duplicate of bug 353819 ***