When modifying a Workflow at runtime using the MODIFY_TASK script command, the Workflow monitor will be stuck in phase 'Regeneration' with the Refresh-Button being grayed out.
In previous versions the view was refreshing throughout all stages.
Software Bug in AWI
Release : 12.3
Component : AUTOMIC WEB INTERFACE
There will be a bug fix in a future Service Pack for the AWI.
As a simple workaround, just close and re-open the process monitor of the affected workflow.