2 Possible reasons.
1) Just an oversight from the railways.
2) The signals and points are being controlled from some other stations.
In many cases, the 'Junction' suffix is given to the station which controls the signals and switches at the bifurcation point. This can be particularly seen in suburban routes. There...
more... are quite a few stations in Delhi, Bombay, Calcutta, Madras where multiple lines branch out, but these stations are not called 'Junctions' because the signalling at these places is centrally controlled from another station or cabin. It is the station that controls the movement of trains that is called a a "Junction".