Well....
There was definitely an LS 757-200 on approach with nose gear doors down, well after gear had locked down.
This was about 13.45 Saturday.
Was hard to tell from my position if he was on 23L or 23R at that stage (5-7 miles from TDZ) but they sometimes switch across quite late in emergency situations at MAN.
Didn't notice any following aircraft to see if there was another with hydraulic issues.