Comments not displaying This is very strange. 

Comments are only displaying for a content type called "Issue" for roles that have the Comment permission "Administer comments and comment settings". I set the "View comments" permission for all roles. All the other content types display the comments properly to all roles. Somehow this content type is corrupted. Has anyone seen behavior like this? Any suggestions on how to fix it?
First verify that the Issue type isn't set to hide comments. If comments exist but are hidden, only admins will see them. A path something like this: /admin/structure/types/manage/issue, and go to the 'Comment settings' tab at the bottom.

Also, you might go to /admin/reports/status/rebuild and rebuild the permissions cache.