How to log in to the site through VKontakte with an ampersand in redirect_uri?

Question

In contact with

Tell me, now there is a problem with the ampersand in the redirect_uri (as, for example, discussed here https://vk.com/topic-1_24428376?post=52128)?
I try to shove a line with an ampersand into redirect_uri, like this, domian.ru/url?test=1&test=2 - it doesn't work, it says "redirect_uri is invalid, please pass same redirect_uri, you used in authorize method."
If you push the URL without an ampersand, for example domian.ru/url?test=1, then it works fine. Is it still the same contact bug?
Here is a working example of pesenok.ru

Answer 1

Are you serious?
It assumes that the ampersand separates the url you are redirecting to, not the one you specify as redirect_uri