Using cart popup, a completed checkout does not send message event back to originating window to reload when thank you page is reached.

[cardinalm7]

Hello!
With the update to update to the new Buy Button SDK, our functionality around a completed checkout no longer refreshes the site where checkout was initiated from as it once used to. It looks like _bindPostMessage never receives a message event on the window to reload the page. Is anyone else experiencing this issue? Is there a solution?