When using "include deactivated tasks" in the filter of Process Monitoring the response can take minutes or time out.
Indicative for this behavior is the following error in the JWP log:
U00003434 Server routine 'TaskListComponent/apitasklist/<client>/<user>/<dep>' required '57' minutes and '20' seconds for processing.
U00003434 Server routine 'TaskListComponent/apitasklist/100/USER001/DEP002' required '57' minutes and '20' seconds for processing.
Update to a fix version listed below or a newer version if available.
Automation Engine v12.2.4 - Available
Automation Engine v12.3.0 - Available