The link module did work well with EZProxy for a few of the past versions of Drupal 8 but is now again broken.
Some services such as EZproxy provide links have urls that provide another url as a query string parameter, for example:
http://ezproxy.domain.com/login?url=http://another.domain.com
It looks as if the URL validation is not properly formatting these links. The link turns into the following:
http://ezproxy.domain.com/login?url=http%3A//another.domain.com
It gets worse when the url passed as the query string has query strings in them, for example
http://ezproxy.domain.com/login?url=http://another.domain.com/some/file?...
turns into:
http://ezproxy.domain.com/login?url=http%3A//another.domain.com/some/fil...
Closed: works as designed
9.3
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It's likely this issue predates Contrib.social: some issue and comment data are missing.
I have the same issue. The linked site is not routing back correctly because of the encoded link in the query string.
What is a sensible solution?
Apparently the URL encoding "works as expected". Should the third party (ezproxy.domain.com in example above) change their handeling of encoded URLs in query strings?