weather-showers-scattered-symbolic is not rendered properly
It has beige outline and white fill, but it should be with white outline and no fill:
The svg has two shapes, but only a single path and it looks pretty different - very simple - compared to a few of the other icons I checked.
Nautilus, EOG and Inkscape render it correctly:
Workbench renders it the same as Icon Library and GTK Icon Browser renders it like this: