As a Confluence user, I would like to be able to insert links with custom url protocols.
The new editor does not properly create links that do not use one of the standard web protocols when inserting with the Insert Link dialog (e.g. http://, ftp://). It creates the <a> but without a href attribute. In 3.5 and earlier, you could create a link for any protocol type using wiki markup: [something://mysite.com]. Inserting the wiki markup results in the link being stripped and the URI appearing as plaintext.
The only workaround is to insert a link manually with the HTML macro, but not all sites will be able to enable this macro for security reasons.
Companies may rely on links for specific tools used by their departments and the ability to link those does impact productivity and ease of use of the platforms