SiteOrigin Hero first loading problem

Hello,

i have a problem, on first (clear cache) load of the website (home page) the SiteOrigin Hero widget brakes and it doesn’t load properly. I have the latest WP and plugins, i’m using SiteOrigin page-builder whit Vantage theme. I have tried to disable all other plugins as well as (Disable and Enable) SiteOrigin Widget bundle but nothing worked. (this problem doesn’t appear on 2,3,4…. load of the web page only on first)

On first load: https://ibb.co/jD0SWQ
On other loads: https://ibb.co/cQuMrQ

I am using SiteOrigin Hero widget for a full screen background video (on the front of the video a picture and some writing using the widget), i have tried to put a background img to the row containing the SiteOrigin Hero widget but it doesn’t help.

Please help
Best Regards
Ziga