Yes, icons are messed up with the Frameworks 6.2 update today.

[Beerislife]

I noticed the login screen icons were MIA.

My main icon set is Papirus Dark, and they seem OK...

[claydoh]

https://bugs.kde.org/show_bug.cgi?id=487374 and others

it is being looked at

A workaround if using a stock icon set and breeze: set your global theme to dark and colors to breeze light