Mega Menu not saving custom fields.

Using woodmart with the lite theme.

Trying to add html block to a new menu, when I save, menu doesn’t keep the changes. I try with both settings, set size and full width.

This only happens in the main menu. When trying to create one in other menu like categories, everything works like a charm.

Please suggest solution.

PS: The demo mga menus like the one on BLOG works. When i try to add new menu, that’s when the site doesn’t save the changes.