Logo image is never cached
I've noticed something blinking in the top bar when I was switching between pages in long issue lists.
It looks like https://gitlab.gnome.org/uploads/-/system/appearance/header_logo/1/gnome-logo.svg is served with
Cache-Control: max-age=0, private, must-revalidate, private, no-store
Pragma: no-cache
which means it gets reloaded on every page, causing the annoying blinking.