If you have an issue with double variations in Gastro (1.0.32) or Fabrique (1.0.16) latest version, please check your wp-content > gastro > woocommerce > single-product folder and remove "add-to-cart" folder.

Update theme via FTP replacing old theme folder with new theme folder won't remove the file we removed in the theme from our last update, you have to manually remove it.