CA Seller Reveals is Licensed RE Agent as a 'Counteroffer'

[Neil G.]

Made an offer on a CA (Los Angeles County) commercial property and got verbal acceptance BUT the listing agent - who is also buyer's agent in this transaction, doublesiding it - is saying the Seller is now making a "Counteroffer" that Seller is a licensed real estate agent which must be signed. Not a disclosure, rider, etc apparently, but a 'Counteroffer' that seller is an agent.

Is this CalBRE-compliant? How so??

Just wondering why the listing didnt just state owner/seller is an agent from the get go, and moreso, just for future reference sake.