Bug in negative LDO enable generation
I understand that D12, T3 and the surrounding resistors form a threshold circuit to only enable the negative-voltage LDOs when the -12V goes below -11V, preventing -5V and 2.3V from switching on before the -11V LDO does. For this circuit to work in simulation, the 11V zener should be mounted the other way - the way it's mounted now this will switch on almost immediately.