core24 desktop-launch rebuilds gdk-pixbuf-loaders.cache from the first LD_LIBRARY_PATH directory that ends in the arch triplet. Stage-packages drop a gdk-pixbuf tree without libpixbufloader_svg.so at $SNAP/usr/lib/<triplet>, ahead of gnome-platform, so About-page SVGs fail with "Image type svg is not supported". Fixes the same core24 GTK3 gap documented at: https://forum.snapcraft.io/t/missing-svg-support-for-gtk3-in-core24/48851