Custom dashboard with widget "Alert List" automatically refreshes per interval for all options of "Group by" except "None".
Categorization under "Group by" folds all of the listed alerts under category except for "None" which makes it easier to view recent alerts. However, option "None" don't refresh automatically whereas manual refresh works.
Aria Operation 8.16.1
API request triggers automatically for widget "Alert List" per interval for all options of "Group by" except "None".
Issue has been identified in the Aria operations version 8.16/8.16.1 and is fixed in 8.17.1.
https://knowledge.broadcom.com/external/article/324342