Hello,

a recent KDE update has made the menus of system tray applications (such as notifcations or volume) transparent. This makes the text hard to read, depending on the background. How can I disable the transparency?

Thanks!

Which theme do you use and which exact Plasma version? I haven't observed any changes in Breeze between Plasma 5.17.4 and 5.17.5

Not sure exactly at which version it changed.

Operating System: Arch Linux
KDE Plasma Version: 5.17.5
KDE Frameworks Version: 5.65.0
Qt Version: 5.14.0
Kernel Version: 5.4.10-arch1-1
OS Type: 64-bit
Processors: 4 × Intel® Core™ i5-6400 CPU @ 2.70GHz
Memory: 23,5 GiB

Using Breeze at every theme setting.

The only thing that comes to mind is disabling the translucency in the Desktop effects.

I just tried here: with all styles set to Breeze nothing is transparent. Going back to Breeze Dark now with slight translucency. Breeze is far too bright for my eyes..

Well, obviously your Breeze seems to be different than my setup, see attached screenshot

That is not transparency, that is translucency, see my post above, you can change the intensity of the translucency easily on the Desktop Effects settings.