## bug 9 for fix 5
gap> A:=FullMatrixLieAlgebra(Rationals,2);
<Lie algebra over Rationals, with 3 generators>
gap> B:=LieDerivedSubalgebra(A);
<Lie algebra of dimension 3 over Rationals>
gap> D:=Derivations(Basis(B));
<Lie algebra of dimension 3 over Rationals>
