Hello Everyone,
We apologize for not being able to address your query on time.
As shared above, this might be a reason for the document is waiting for "Prefil". It's by design. The role is called prefil by sender', so when the sender signs first, the prefill stage is skipped as it's not needed as the sender can fill these fields when they are signing first.
Prefill is a special sender role which allows senders to fill out fields before sending the agreement. This allows senders to fill these fields prior to sending without needing to be either a signing party in the agreements, or allows them to sign last.
Its an optional step that need to be unchecked when sending the document for signature. Refer to this help article Prefill Agreement fields before sending

And the similar discussion where correct answer is given- Waiting For Me to Prefill
Regards,
Akanchha