Hi @tomasbal –
We typically see these quirky behaviors when there is a plugin or theme conflict.
Here are some troubleshooting steps you can take to resolve this issue:
1.) To begin, please make sure that your theme and all plugins are up to date.
2.) Try to deactivate all the plugins except for WooCommerce to see if the issue persists. If the problem goes away, re-activate and test each plugin to see if you can determine which plugin the problem originates from.
3.) If the above does not resolve the issue, try switching your theme to the Storefront theme (https://woocommerce.com/storefront/) and see if it works correctly. If it does, you’ll want to contact your theme’s developers and see if they have a fix/update.
If the above steps don’t resolve the issue, please feel free to send us your System Status Report to help us troubleshoot. You can find it via WooCommerce > Status. Select “Get system report” and then “Copy for support”. Once you’ve done that, you can paste it into your reply here.