When a PR comment is minimized in GitHub it appears there as

This comment has been minimized

Graphite does not handle this properly, so the comment is displayed in full. We have a PR review bot that minimizes the older comments and creates a new one, which is leading to a giant wall of old comments when viewed in Graphite. The review bot will be changed to avoid this problem, but minimized comments should be supported

Hey Chris! Graphite doesn’t currently collapse comments that are minimized on GitHub. I’ve logged your +1 on our existing feature request. Changing the bot is a solid workaround meanwhile. Mind sharing a PR link where you’re seeing the comment wall so I can add it our example list? Thanks!

This is my highest friction item for graphite currently. Any chance it is coming soon?

I don't have anything concrete to share today but this is with the team for review and something we have noticed internally as well. Once I have something concrete to share I will double back and alert you. Thanks!