Hello,
Thanks for the detailed explanation.
Our technicians replied that it is a complicated bug, and we do not have a ready solution. The fix will take some time, and will be added in one of next updates. Follow our changelog – https://xstore.8theme.com/update-history/
Please do not use this element, and replace it by somthing else. For example, you can create a static block with an Autoscrolling Text element inside and show it in the header via HTML block.
Regards