When configuring the plugin setting on section "cart & checkout", named "Hide bundled products on cart & checkout page" to "Yes, but list bundled sub-product names under the main bundle in separate lines" all names still appear on the same line.
After some testing it seems that only when using the classic Woocommerce cart this is shown correctly; when switching to the blocks-based Woocommerce cart it's all displayed on a single line.
Using WPC Product Bundles 8.3.3
When configuring the plugin setting on section "cart & checkout", named "Hide bundled products on cart & checkout page" to "Yes, but list bundled sub-product names under the main bundle in separate lines" all names still appear on the same line.
After some testing it seems that only when using the classic Woocommerce cart this is shown correctly; when switching to the blocks-based Woocommerce cart it's all displayed on a single line.