The Atlassian Community forum is full of interesting questions regarding Atlassian products. They receive quick input by community members and Atlassian employees. However, the form of the forum is not suitable to retrieve information from answer and keep your sanity (as every plain discussion forum on the web). Stackoverflow and other Stackexchange networks have solved this problem by providing answers to questions in an acceptable way. The edit-based workflow allows you to keep information up-to-date as well.
Questions like https://community.atlassian.com/t5/Jira-Software-questions/Remove-sub-task-from-Scrum-Kanban-board/qaq-p/344700 that became unreadable over time show that it's necessary to use this form of information management. The effort both employees who invest their working hours paid by Atlassian customers and users would be optimized.
Please start using stackoverflow.com and the provided Jira tag. I'm not associated with the Providers of stackexchange or stackoverflow, just a fan of smarter processes.