In some app (GitHub and JIRA) you can choose to filter tasks/issues to be synced depending on their type.
For GitHub, you can choose to sync only Issues, PRs or both.
For JIRA you can choose to sync all issue types or select among these: Bug, Epic, Improvement, New Feature, Task.
To filter tasks/issues by their type, go to your sync settings under the app tab (GitHub or JIRA). If you leave the drop-down menu empty, all issues will be synced, whereas if you select one or several issue types, only the issues with this type will be synced.