It shows up as a white box.
i see it on my end, do you have iframes disabled?
or (less likely) it might be a CSP issue. check your browser console for anything about that.
It was frames. Enabling frames through noscript displays it now.
i could make it available without iframe, but then it cant be refreshed/regenerated without refreshing the whole page.
thats probably why 8chan kept captcha on a separate page for noscript users.
ill keep it like this unless im absoltely forced to change it.
That's fine. Given that it is annoying having to refresh the page if you screw up the captcha, it's best to leave it as is.