Navigate to issue from comments
You can jump from a comment right to an issue in your issue tracker. For this, define issue navigation patterns in Settings | Version Control | Issue Navigation:

When you commit a changelist and provide the commit message, make sure it matches one of your issue navigation patterns. Later, when you browse through the changelists in the repository, such comments turn into hyperlinks.
Clicking a hyperlink brings you directly to an issue in your task tracker.