Paypal auto return to order-received page not working anymore?

Hi everyone,

after updating to the latest version of woocommerce 2.4.7,
the paypal doesn’t auto return to the order-received (or Thank you) page anymore. The buyer has to click return to website after payment in Paypal to get back to the order-received page.

I got an important instruction for the buyer to see in that page so it is crucial to auto return to that page.

I remember it used to auto-returned without problem when i tested before updating to 2.4.7.

Is this woocommerce issue or is it related to recent paypal update?
Do i have to setup something in woocommerce or Paypal?

Thank you so much for your help.

https://www.ads-software.com/plugins/woocommerce/