Hi @spum
Thank you for posting.
According to your description and screenshot, your flow will create the secondary unnecessary task when reply the flagged email.
I tried to reproduce your issue but failed. It works normally from my end. Could you please share me the result details of the flow status? Meanwhile, have you checked whether any other similar flow is still running.
If possible, please try to create a new same flow for test purpose.
Thank you very much for your nice cooperation and hope the hear from you soon.
Best regards,
Anna