  The presence of a Majorana bound state in condensed matter systems is often
associated to a zero bias peak in conductance measurements. Here, we analyze a
system were this paradigm is violated. A Majorana bound state is always present
at the interface between a quantum spin Hall system that is magnetically gapped
and a quantum spin Hall system gapped by proximity induced s-wave
superconductivity. However, the linear conductance could be either zero or
nonzero and quantized depending on the energy and length scales of the
barriers. The transition between the two values is reminiscent of the
topological phase transition in proximitized spin-orbit coupled quantum wires
in the presence of an applied magnetic field. We interpret the behavior of the
conductance in terms of scattering states at both zero and non-zero energy.
