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Complex JQL may not be able to use Basic view and the search bar will automatically switch to Advanced JQL Mode
The "Auto-update search results-filtering" Jira option is disabled on the search bar. After you selected a value from a combobox the Update button has to be pressed to apply the filter.
Sorting using ORDER BY JQL clause is not supported and will be ignored.
Related Video Tutorials
Lesson 1 - Board & backlog filtering tutorial
Lesson 8 - Perform PRO backlog planning without hassle tutorial