ReCaptcha V2 puzzle images are not loading on IE when domain name is an IDN

[thisarattr]

We are using reCaptcha on a IDN name web site (eg: http://somename.xn--ngbc5azd). This page is working fine in all the browsers, expect IE.
On IE it loads the reCaptcha box, but when we click on reCaptcha box it does not load the puzzle images. Error on console is as below,
access denied recaptcha__en.js, Line: 342

However, this same code works fine for regular domain names, in all the browsers including IE.

[rowan-m]

Closing super old issues. Please re-raise if still relevant.

[antmorozov]

It is still relevant not only in IE but also in the latest Edge.

Here is an example: the same website on http://recaptcha.justtodoit.ru/ and http://рекапча.justtodoit.ru/ (http://xn--80aanu0ac7c.justtodoit.ru/). Press "Feedback" button and then try to solve recaptcha.

On recaptcha.justtodoit.ru everything works as expected, but on рекапча.justtodoit.ru, when you click on the recaptcha checkbox, it shows a spinner, then the checkbox again and, after some time, a version of recaptcha for browsers without JS support.

[antmorozov]

Hey @rowan-m
Should I make a new issue or you can re-open this one?

[antmorozov]

I think it might be related to this bug in IE/Edge (they send incorrect values for Origin and Referer headers on IDN):

https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/8075637/

[rowan-m]

Closing old issues that are not related to the PHP client code.