After upgrade to Plasma 6 all SVG icons disappears for all profiles even new created

After upgrade to Plasma 6 all scalable icons not appears anymore. It’s not like bug which can be fixed by selecting another icon theme - it’s a system-wide problem which appears even on new created profiles.
I tried to reinstall all svg-related packages and all plasma-related packages and nothing happens.

OS: Manjaro Linux x86_64
Kernel: 6.6.32-1-MANJARO
DE: Plasma 6.0.5
WM: KWin
Theme: [Plasma], Breeze-Dark [GTK2], Breeze [GTK3]
CPU: AMD Ryzen 5 7600X (12) @ 5.453GHz
GPU: NVIDIA GeForce RTX 3060 Lite Hash Rate
Memory: 4477MiB / 64047MiB

Can provide any logs needed.

Hi trionghost,

Please provide the output of:

pamac search --installed svg

Here it is:

pamac search --installed svg                                                                                                                                                                                                             ✔ 
qt6-svg  6.7.1-1                                                                                                                                                                                                                                   extra
    Classes for displaying the contents of SVG files
qt5-svg  5.15.13+kde+r6-1                                                                                                                                                                                                                          extra
    Classes for displaying the contents of SVG files
librsvg  2:2.58.1-1                                                                                                                                                                                                                                extra
    SVG rendering library
lib32-librsvg  2:2.58.1-1                                                                                                                                                                                                                       multilib
    SVG rendering library (32-bit)
ksvg  6.2.0-1                                                                                                                                                                                                                                      extra
    Components for handling SVGs
dvisvgm  3.3-1                                                                                                                                                                                                                                     extra
    A fast DVI, EPS, and PDF to SVG converter
svgpart  24.05.0-1                                                                                                                                                                                                                                 extra
    A KPart for viewing SVGs



it’s exactly the same as mine, which is working. Try updating the icon cache manually:

rm ~/.cache/icon-cache.kcache

I tried, and even create new profile (see screenshot with Testdummy user). Something is broken, and I don’t understand what exactly.
It appears after upgrade to Plasma 6 on my wife’s PC, so I’m trying to fix this without reinstall the entire system.

Well, I can’t think of anything else, so try rebuilding the cache:

rm ~/.cache/icon-cache.kcache && kbuildsycoca5 --noincremental

Reinstall Breeze theme and icons and relogin:

sudo pacman -S breeze breeze-icons breeze-gtk

Tried, and it doesn’t work. And if I install different sets of icons from Download option in Settings they don’t work either. I even tried to --overwrite them.
I stick to Oxygen Icons theme for now which is mostly raster and show almost all icons.

There is a similar post on the Arch forum with a workaround, you may want to check if that helps, and also the linked bug report.

Have you tried to set a “Global Theme” that specifies the icon theme matching its style, rather than setting icons in the Plasma style itself?

I recorded a video of the problem, maybe it will give you thoughts