Hi @sovarone,
I’ve performed some cross-testing for us today on several of my sites which have the latest versions of WordPress, WooCommerce and our free Storefront theme as the only enabled software. When doing so I’m not seeing any product categories displayed on the cart page of the site.

Image Link: https://cloudup.com/cMZUZ21iB8a
Could you be able to provide a link to the cart page of your website so we can take a look to try and offer some guidance for you?
Hello, Thank you for your answer. Yes of course, you can have a look at : https://bandama-clothing.com. You will have to add a product to the cart to see what I mean. Many thanks.
That is true that we customized the cart page in order to display product categories, but it should not have any impact on the comas…
Hey @sovarone,
Thanks for the link to your site and it seems that something outside of the WooCommerce plugin is adding the categories underneath the product title on the cart page of your site.

Image Link: https://cloudup.com/cVESr2552Jy
Looking at the code output it seems to be either a plugin ( Possibly Elementor ), theme or some custom code that’s adding this functionality.

Image Link: https://cloudup.com/cP-_jDyBv33
To modify the output of those additional category elements you would first need to ascertain exactly what plugin or code is adding those. You can then reach out to the creator of that software so they can help alter the display of the spacing or commas.
For reference, this particular forum is for questions that are directly related to the features and functionality of the free WooCommerce plugin. It does not, however, offer support for questions related to any plugin or themes which can work with WooCommerce and add additional functionality/features.
I wish I could help more, but hopefully, this gets you going in the right direction to alter the display of these categories which have been added to the cart page.
Ok, thank you for your answer.
Kind regards.