3135239 - Flexible workflow started but unexpected behavior found (eg. work item visible with delay; error raised when forwarding ; push notification not working)

• Flexible workflows are started after application activates, but work items cannot be found in user's My Inbox. 
• Check the workflow agent in the workflow log, message "this work item does not have any current agents" raised. 
• Work items show up in 'My Inbox' with more than half an hour delay.
• If you refresh the workflow buffer via 'SWU_OBUF' the work items will appear in 'My Inbox' instantaneously.
• You also notice that Push Notifications are not showing up in Fiori immediately for these work items. They are getting in registered in SWW_WIREGISTER but are not getting picked up by the SAP_WORKFLOW_PUSH job.
• When forwarding a work item from My Inbox, error "Cannot forward task. Task TS xxxxxxxx has no agent" raised.
• After maintaining substitution relationship, the substitute user can see the work items in My Inbox but gets error "Task no longer exists in your inbox" when navigating to the original user's work items.

• SAP Business Workflow
• SAP Web Application Server for SAP S/4 HANA
• ABAP PLATFORM - Application Server ABAP

WF_GDPR, SWF_WORKFLOW, WFMSTD, WF_SAP4ME, TS02000054, standard task, SAP_WORKFLOW_PUSH, RH_TASK_AGENT_CHECK, SWW_WIREGISTER, NOT, Push Notifications, SAP_BWF_PUSH_NOTIFICATIONS, SAP_WORKFLOW_PUSH_NOTIFICATION, NEXT_EVAL, CL_SWF_PUSH_NOTIF_API, SLG1, 01800349, delayed, Task no longer exists in your inbox , KBA , BC-BMT-WFM , Business Workflow , Problem