Remove comma from post category

I think the easiest option is to use the display_posts_shortcode_category_display filter to remove them. Try adding this to your theme’s functions.php file or a core functionality plugin: https://www.billerickson.net/code/dps-remove-commas-category-output/

Thanks Bill,
The new filter resolves part of a question I posed a couple of months ago.
Thanks,
Phil.