An update - It renders OK now, without making any changes to the setup on my end.
PS. This is indeed in Firefox with uBlock set to block all domains except for kizie.co, edgecastcdn.net and twimg.com.
PS. This is indeed in Firefox with uBlock set to block all domains except for kizie.co, edgecastcdn.net and twimg.com.
Firefox strict privacy setting completely blocks twitter CDN urls, no way to fix it I suppose.
Thanks for taking the extra effort, appreciated :)