fusidebar (pronounced like the Spanish word for "future") is an add-on that allows you to effectively "hide" the right-hand sidebar (i.e., Issues, People, Dates, and / or Agile sections) when viewing Jira issues. It is particularly useful when viewing wide panels. This extension will add an icon to the top right corner of the Jira page (just like the other icons used for the other main features). When you click this icon, the extension will decrease the width of the sidebar to zero, causing the main panel to expand to full width.

It is the perfect companion for viewing large issues (especially those that do not use the noformat feature). The sidebar can now be hidden, allowing you to focus on what's most important, without missing anything.