Summary

Creating external URL links containing curly brackets breaks the links. The links become unclickable and the URL address is gone when you try to edit it

Steps to Reproduce

1. Create a link URL address http://test.com/doc={123}
2. Save the page

Expected Results

1. The URL link is clickable

Actual Results

1. The URL is not clickable. This is what's shown in the source:

   <a rel="nofollow">LINK TEXT</a>

Notes

1. This also happens when adding the link through the Link Macro

Workaround

Escaping the curly brackets with a backslash would not work. However, replacing the curly brackets with a valid ASCII format would work. This means that open curly bracket { is converted to %7B and closed curly bracket } is converted to %7D. For example http://test.com/doc=%7B123%7D

In case of MS SharePoint another workaround is using SharePoint ShortUrl