Honestly I am not sure its something being used by Toolset. I can find out if needs be but to be honest the content wrapped in this appears fine.
The issue is with the content not in this container.
In the section below heading “TV Show Air Date & Info for the UK” this is the section thats acting odd, its just using LGC and on mobile the columns seem to lose their margin.
The LGC Columns within the js-wpv wrapper are grabbing the inside-grid-container padding from the parent grid not the columns. So chances are its a cache issue, Can you clear and disable your cache?
I have cleared my cache and disabled the cache plugin as well but still the same issue.
The LGC Columns within the js-wpv wrapper are all acting fine though, the left margin of these don’t change when on mobile. Its the LGC columns not in this wrapper above them that the left margin is changing on.