Some instruments have the 1st and 2nd designation stacked one on top of the other; other instruments separate them with a comma. It looks inconsistent. But I suspect there is a reason why Dorico does this? Can anyone enlighten me?
An example with different settings (notice that the flutes have different stem directions due to the separation of the voices [as seems to be the case in your screenshot], while ob. and cl. have only one voice):