Inactive tabs are closed automatically after 1 hour, unless you don't want them to be.
Closes inactive tabs after 1 hour of inactivity. The active tab in each open window is left untouched. Automatic closing can be disabled for particular tabs by clicking the extension icon (the bomb will turn into a pin, indicating that the tab is pinned).
- (2018-03-04) Aakash N S: Helps me keep a clear head