yes, this did happen to me when my I-140 got approved and the USCIS online case status said something like they have mailed the document to NVC for further processing. After waiting for three months, and making multiple weekly calls to NVC and USCIS, I couldn't make much progress. I received the standard response from NVC that my case has not been received from USCIS yet. USCIS case inquiry said something like they have forwarded the case to NVC for processing.
Ultimately, I reached out to my local Senator’s office and they made an inquiry to USCIS & NVC on my behalf. They fwd me the response from USCIS. It stated that USCIS has forwarded my case to NVC on the day Senator’s office had reached out to them. Then after about two weeks later, NVC confirmed that they have received my application. Hope this helps!