when using Paypal payment required billing details can be left blank ?!

Just activated the plugin and found what seems to be an issue with the Plugin for me. It seems that when using Paypal payment on the checkout page, all the required billing fields can be left blank, which means also shipping is not calculated. It is only necessary to click on the I have read and agree to the website terms.

Is this normal behavior or do I need to set-up something else to force user to fill that info when using Paypal payment?
All my other payment possibilities don’t follow up if all the required fields are not filled