[CreateDetailView(Id= "Muestra_DetailView", Layout = "Identificación del Cliente[Cliente,UnidadDeNegocio]")]
The group created just got the last word as caption (Cliente)
Regarding the error that you reported I can say that all information submitted to our development team. Also a relevant issue [102.193924] registered in our issue tracking system. You may reference to this number later to find out its state.
As a temporary solution, you can use the Caption group without spaces in the attribute, and localize it in the model.
Regards, Mariya On behalf of Xafari Client Services Team