Thank you for reporting this issue.
This issue has been fixed and a new version of the theme has been released where the bug is not longer present. If you are still having this issue you can download the latest version of the theme and just replace the ~/Themes/Venture/View/Product/ProductTemplate.Grouped.cshtml file with the one from the newly downloaded theme.
Hope that helps!
Thanks for your reply. I have 2 more bugs that are annoying me. I tried to submit a ticket here but it never appears under my tickets. Here are the issues:
I submitted a ticket yesterday but can't see it today. So I'm resubmitting it.
-When adding an item to cart on mobile, the quantity label on the cart icon does not update.
-Also, even after setting a product attribute as required for a product, I can still adding it to the cart without selecting an option.