We have the same case, my Review of Additional documents shows "We need more documents..." from the day I uploaded the required docx upto 4th January.
I sent another webform to London and ordered a new set of GCMS notes on 3rd January. After 2 days, they replied back to me (finally!!). The content was:
“ We confirm receipt of the information requested as well as the payment of RPRF fees. Please note your file has reached the final stages of processing and is now awaiting final review by visa officer.
We will contact you shortly.
Yours sincerely,
EXP”
After that, I checked my account and the status is now: "We do not need additional documents"
Hope you will receive their reply soon also.