Hi,

now I have the same problem with the 4.8.1 Update. The GridRow elements are not in the #main div. I removed every custom shortcode from the child theme folder, but the gridrow is still outside the #main div. When I insert a textblock befor the gridrow element everything is in the #main div.
The header and footer are also the original files from the 4.8.1 Update. How can I fix this problem?

Thanks in advance