typo3.org is loading fonts directly from google in youtube player
You load all your design fonts from typo3.org - fine ;-) But you have youtube clips on the site - included with nocookie option. But the youtube player is loading the roboto webfont for the clip's title - and the roboto font file is fetched directly from google. It's really sad - but you should secure this with something like a 2-click-solution in front of the youtube clips.