So I googled a bit today and found this thread
https://discuss.flarum.org/d/17770-friendsofflarum-formatting/359
in the post 350 there was a solution to edit config.php:
'headers' =>
array (
'poweredByHeader' => true,
'referrerPolicy' => 'strict-origin-when-cross-origin',
),
);
Not sure how outdated this information is. Maybe @JoshStrobl can take a look ๐
also post 317: https://discuss.flarum.org/d/17770-friendsofflarum-formatting/317
UPD: I also checked the EndeavourOS forum (not Flarum) as I remember they have a similar thread:
https://forum.endeavouros.com/t/what-are-you-listening-to-right-now/221/9698
Looks like they don't have this problem, all videos are available...