Forced custos at end of line does not produce (or cuts) vertical bar

[romanogit]

want to create a gabc file that produces a custos and, at the same time, force justify alignment. The vertical bar of the custos gets cut and ends up not appearing at all. I think it seems to end up being print after the justify alignment.

gabc:

%%
(c3)Per(c) óm(e)ni(f)a(f) sǽ(g)cu(f)la(f) sæ(e)cu(f)ló(fe)rum.(e) (::) <c><sp>R/</sp> </c> A(e)-men.(ef) (::)(f+z)

Is it possible to solve this in gabc?

What I was expecting (this is the result from auto custos)

[romanogit]

Found a correct way, inverting the custos

%%
(c3)Per(c) óm(e)ni(f)a(f) sǽ(g)cu(f)la(f) sæ(e)cu(f)ló(fe)rum.(e) (::) <c><sp>R/</sp> </c> A(e)-men.(ef) (::)(z+f)