The "Failover Recovery Plan" task remains stuck in the Recent Task pane without progressing or completing in vCenter UI.
Site Recovery UI > Recovery Plan > Failover Recovery Plan completed successfully.
VMware vCenter 7.x
VMware vCenter 8.x
VMware Live Recovery 9.x
The issue is caused by a stale task entry in the vCenter UI.
Follow the steps in the KB article to remove stale tasks from the vCenter UI - Clear stale tasks from the vCenter "Recent Tasks" panel