Users with Roles to see the incidents/events are not showing within the data loss prevention endpoint reports of the dashboard with an incident access filter applied.
Role configuration for incident access filters contains space between users. Any user with a space before their name (after a comma) or after their name will not be able to view all incidents. (see screenshot). No spaces must be before or after any username.
Incorrect:
Remove space in between each user in the group for roles for incident access filters.
Correct: