PublishPress Advanced Video Block Responsive view broken with GeneratePress

I was trying to use the PublishPress Block: Advanced Video Block, but there is a conflict with the GeneratePress CSS that prevents the block from opening responsive properly on small displays. It is like the block doesn't understand it is on a small screen. It works fine on the standard WordPress themes.

Support post with the plugin author

Site currently displaying the issue

I was wondering if this is something you all would be willing to look into? I tried a local copy of a fresh wordpress install with just your theme and this plugin and could duplicate the issue.

Steps:

1. Add a local video and thumbnail image to media library
2. on a new page add the Advanced Video Block (Plugin URL)
3. setup local video and image in the block.
4. Publish and view with Dev tools and set for Phone size. The video still pays fullsize in the lightbox instead of being smaller.