  Gauge fields in the light-front are usually fixed via the nA=0 condition
yielding the non-local singularities of the type (kn)^(-a)=0 and a=1,2,.. in
the gauge boson propagator which must be addressed conveniently. In calculating
this propagator for n noncovariant gauge bosons those non-local terms demand
the use of a prescription to ensure causality. We show that from 2 gauge bosons
onward the implementation of such a prescription does not remove certain
pathologies such as the non existence of two or more free propagating gauge
bosons in the light-front form.
