As a responsible RF you could've removed an extra arch from the 'B' to rectify the mistake & make it a 'P' :P
Jokes apart,New Jalpaiguri is the 2nd most Important Station in NFR(you can compare with Chhapra in NER OR, Vishakhapatnam in ECoR OR,Ranchi in SER OR, Asansol in ER).So these mistakes shouldnot have happened with SR(one of the most responsible with their rakes & Name Boards)