Hi. I am testing my e-commerce site payment system via sandbox. In my sandbox business account I have set to redirect after purchase to tank_you.php page. only registered clients can purchase something. But I have interesting issue. If I open new window, login and make purchase before redirecting to tank_you I lose my client login session. If I stay in the same window and login in the same page again and make purchase everything is working properly. What could make such behavior only in new window? What could be the reason for loosing sessions in new window only after redirecting from sandbox?
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