2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/27255A random-matrix theory is presented which shows that breaking time-reversal symmetry by itself does {\em not} suppress the weak-localization correction to the conductance of a disordered metal wire attached to a superconductor. Suppression of weak localization requires applying a magnetic field as well as raising the voltage, to break both time-reversal symmetry and electron-hole degeneracy. A magnetic-field dependent contact resistance obscured this anomaly in previous numerical simulations.8 pages, REVTeX-3.0, 1 figureCondensed Mattertext