UPDATE***
same thing just happened to me this morning. got an email from the NVC that they received my approved I-130 from USCIS even though the USCIS Still says my I-824 is still processing.
I-130 started - Feb, 2022
I-130 approved BUT NOT SENT TO NVC (USCIS ERROR) - Feb , 2023
I-824 received by USCIS May 4, 2023
I-130 received by NVC today April 25, 2024
I-824 status on USCIS website still says "we received your form on May 4th" doesn't even say processing or processed.
POTOMAC service center
I wish everyone that is still waiting the best of luck