WHMCS Cloud Slider cart template subdomain custom field duplicated

Hi all, im using whmcs 6.1 and i selected the cloud slider cart template to use with provisioning module, but when i try to create a new blog it asks me twice to enter subdomain name.
In the domain registration process of whmcs it displays 4 options which the last one is to use the subdomain name and in the next step it shows again the domain "custom field" created when i installed provisioning module following the guide. I don't know if its ok to delete the custom field when using cloud slider cart template or if its a bug.

Thank you