  We show that the magnetoconductance oscillations of laterally-confined 2D NS
junctions are completely suppressed when the superconductor side enters a
topological phase. This suppression can be attributed to the modification of
the vortex structure of local currents at the junction caused by the
topological transition of the superconductor. The two regimes (with and without
oscillations) could be seen in a semiconductor 2D junction with a cleaved-edge
geometry, one of the junction arms having proximitized superconductivity. We
predict similar oscillations and suppression as a function of the Rashba
coupling. The oscillation suppression is robust against differences in chemical
potential and phases of lateral superconductors.
