Edits in MR comments not get updated on dashboard

Created by: Razer6

Dashboard messages not get updated if the MR comment was edited.

Steps to reproduce

1. Create a MR and comment on it
2. Go to dashboard and look at the comment
3. Goto the MR again and edit the comment
4. Goto dashboard

Expected behavior:

Dashboard displays the edited version of the comment

Observed behaviour

Dashboard still displays the old message

How to fix it

Actually I can't answer this. Maybe a to flush the redis cache since the dashboard is cached.

Logs do not make sense for this issue.

Running on GitLab 6.3.0 35db034e