Hi Ammar, thank you for your quick reply 🙂 That is great news; I’ve always found that building a header was the least flexible part of the Avada theme.
I did open a support ticket but was told this counts as customisation so they couldn’t help.
No; I gave up with the Fusion Builder element and used this plugin instead: https://wordpress.org/plugins/testimonial-rotator/
I had exactly the same problem! I had a title, a paragraph of text, then the gallery = no sticky header. Deleted the gallery and added the image files separately = working sticky header. That is a strange bug…
In case it helps anyone else, I found the problem: the host was running Rocket Loader, which was blocking all the js scripts. Disabled that and the site works fine now 🙂