We are treating the drop from 2.0396 as a leading diagonal (wave 1 of C within the A-B-C decline from 2.1160).
Under this interpretation, the GBPUSD rally from 1.9599 is wave 2 within the 5 wave drop (wave C) from 2.0396. In order for the bearish bias to remain intact, price must remain below 1.9998.