140 online status not found

I submitted NIW 140&485 concurrently and got the receipt notice on May 5, 2005 from VSC. When I checked the case status on USCIS webpage, I found the case status of my 485 and 765 are posted online, but my 140 was not found. 3 weeks passed already and my 140 is still not posted online, though the 765 has already been updated with approval. Is this normal? Should I contact the USCIS about this? Thanks for any information!!!