Popup checkout redirects to thank you page in same tab instead of showing inside popup

I'm using the popup checkout. After a successful payment, the thank you page is not displayed inside the popup. Instead, it redirects and opens in the same browser tab, which breaks the user experience.

Expected behavior: Thank you page shown inside the popup after payment.
Actual behavior: Popup closes and the thank you page opens in the parent tab.

Here is a short video showing the issue:

youtube.com/watch?v=KBr3awiGx68

This is a blocker for me since the checkout is embedded inside another page and redirecting away loses the user's context.

Is there a setting I'm missing, or is this a known limitation of popup mode? If so, is there a planned fix or a recommended workaround?

Thanks,
Sven

Hi Sven,

Thank you for sharing the details.

Could you please share the website/page URL where the checkout is embedded, along with the plan name you are using in that checkout? This will help us test the behavior from our end and escalate it to the team accordingly.

Looking forward to your response.

It is visible in the video...
https://pythonandvba.com/no-code-excel-data-entry-form-builder/#form-generator
Product: Buy Me a Coffee, Plan: Coffee

Hi Sven,

We have already escalated this issue to our team for further review. Please allow us some time, and we will get back to you with an update as soon as we have one.

Hi Sven,

This behavior occurs because you are using a redirect payment gateway, where the payment happens outside the popup and browsers do not allow it to stay within an iframe—hence the checkout redirects to the main tab after completion.

As a workaround, you can use the Redirect URL feature to send users back to your desired page. If you’d like this popup behavior improved, feel free to add your request here: https://roadmap.pabbly.com/b/billing-new-feature-request-bug-reporting

Thanks for the clarification. Well noted!