Some themes which have the sticky add to cart feature, display the whole WooCommerce variation form in this component and this may include the Bundler widget.
This may have an impact on the design of your page and confuse your customers:

To hide the Bundler widget from the Add to cart section, perform the following actions:
- Locate the add to cart section on your product page
- Use Chrome developer tools to identify the css class of this section. In the example below, it’s “wd-sticky-btn-cart”:

- Add the following CSS to the custom CSS section of your theme, or use a code snippet plugin:
.YOUR_CSS_CLASS .wbdl_widget{
display: none;
}
In our example, it would be:
.wd-sticky-btn-cart .wbdl_widget{
display: none;
}