Abstract: The simultaneous description of the recent Lead Radius Experiment II (PREX2) and Calcium Radius Experiment (CREX) parity-violating electron-scattering data poses a big challenge for nuclear energy density functional theory, which is referred to as the RREX2-CREX puzzle. While in the non-relativistic Skyrme-like energy density functional, it has been shown that a strong isovector spin-orbit interaction can reconcile the tension, I will present how this puzzle can be resolved within relativistic density functional theory using density-dependent point-coupling functionals with tensor couplings.