UserAgent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 YaBrowser/18.1.1.839 Yowser/2.5 Safari/537.36

Steps to reproduce the problem:
W3C standardized annotation https://www.w3.org/blog/news/archives/6156

The W3C standards are a key milestone towards a future in which all pages support rich layers of conversation without requiring any action by their publishers. That capability can be built into the browser itself and be available as a native feature, just like web search. Conversations will happen anywhere on the Web, on documents, and inline instead of below-the fold, in a federated, standards-based way.

So consider implementing Hypothes.is https://web.hypothes.is/about/

What is the expected behavior?

What went wrong?
Nothing.

Did this work before? N/A 

Chrome version: 63.0.3239.132  Channel: n/a
OS Version: 10.0
Flash Version: Shockwave Flash 29.0 r0