@49016@mastodon.catgirl.cloud is it running a custom compiled firefox, that is somehow telling x11/wayland that its background color is transparent? how can one even define what a "background" is?... and not confused it with a similar color in images and such. this feels somewhat reminiscent to how @media print
works, i guess. it also turns off backgrounds
@green
yes! browser.tabs.allow_transparent_browser and a bit of userchrome styling and the fucker goes transparent
here's the fun part though: the actual backgrounds on the website get removed by the compositor, not the browser, by running a chroma key shader on the windows that keys after a color picked from the browser