Test:
Enable User - Profile plugin
Edit com_contacts Options =>Contact tab and enable "Show Profile"
In back-end, create a contact and assign it to a user.
Edit the user account/profile and add in the Website field this idna url: http://www.джумла-тест.рф/index.php
Create a menu item to display this contact in front-end.
Before patch, you will get:
After patch, the url is displayed as utf8:
Source will rightfully display: Website:</label></dt><dd><a href="http://www.xn----7sblgc4ag8bhcd.xn--p1ai/index.php">http://www.джумла-тест.рф/index.php</a></dd><dt>
@test
Patch works fine for me. Thanks!