The model of Mertens and Williams (2019) delivers a similar outcome: Even though the policy reaction function in their model does not incorporate an ex post makeup element, it delivers a long-run (unconditional) average rate of inflation equal to target by aiming for a moderate inflation overshoot away from the ELB that is calibrated to offset the inflation shortfall caused by the ELB.
For instance, fiscal dominance might become an issue if economic agents begin to emphasize the connection between fiscal sustainability and inflation, and form expectations about inflation based on perceived fiscally irresponsible government behaviour. Needless to say, independent central banks like the ECB will not give any space for fiscal dominance.