Some physics constructors set incorrect physics types. Examples include G4DecayPhysics, G4HadronElasticPhysicsHP, G4HadronPhysicsFTFP_BERT_HP, G4StoppingPhysics, which each set their member typePhysics to 0 (G4BuilderType enumerator bUnknown), instead of bDecay, bHadronElastic, bHadronInelastic, bStopping, respectively. This is because the wrong instance of G4VPhysicsConstructor::G4VPhysicsConstructor is called. Consequently, G4VModularPhysicsList::ReplacePhysics fails correctly to remove these physics constructors.

For example, this is wrong:

G4DecayPhysics::G4DecayPhysics(G4int ver):
    G4VPhysicsConstructor("Decay"),
    verbose(ver)
{}

It should be like this:

G4DecayPhysics::G4DecayPhysics(G4int ver):
    G4VPhysicsConstructor("Decay",bDecay),
    verbose(ver)
{}