Getting PR comments returns results with missing anchors

Issue Summary

When retrieving comments with the rest API, they are returned without anchors despite being anchored.

This is reproducible on Data Center: yes

Steps to Reproduce

1. Get comments using GET /blocker-comments or GET /blocker-comments/{commentId} 

Expected Results

A RestComment containing an anchor

Actual Results

A RestComment that's missing the anchor

Workaround

View the anchor in the UI or use the activities endpoint