Why SearchHumanTasks method is not retrieving all user tasks in 24.1 version ?

We have recently upgraded from Appworks 20.2 to Appworks 24.1 version. After upgrading we found out that SearchHumanTasks input structure has been changed. When we execute the task with required input, it only returns tasks assigned to roles and tasks assigned to current user. It is not returning tasks across all users. Did anybody face this issue ? If anybody has solution or alternate solution please let us know. Thanks.