A San Francisco Tower Controller reported an aircraft taxiing off the runway on a newly reconstructed Taxiway Tango appeared to be confused where to hold short of the parallel runway. The reporter states this has been a recurring issue since the taxiway reopened.

Narrative

Ever since the airport reopened Taxiway Tango; there have been aircraft having difficulty identifying the correct set of hold bars to stop at when told to hold short of Runway 28 Left at night. I had not seen too many of late; until there began an increase. My example tonight was night; wet surface; currently clear enough to see all of the aircraft on final. Aircraft X exited Runway 28 Right; and I would need the runway behind them before being able to cross them. They were stopping at the front end of the hold position marking and I asked them to pull forward as I know it can be confusing. The pilot communicating said 'We were just talking about that' and they would pull forward to hold short of Runway 28 Left. Once I crossed them; I asked Ground Control to ask them to describe what about the markings was confusing as we have seen many aircraft do the same. They said the markings were correct. I am confused what the airport did that is correct and yet causing this issue to persist and currently increase in frequency. I am not sure of the what and why. Please share to my facility and let's see if they can find out from the city before we have an unpleasant incident.