Attributes not set when accessing gsw accessor using array of list

[rcaneill]

ds.gsw["rho"]

returns the correct xarray.Dataarray, however

ds.gsw[["rho"]]

returns a xarray.Dataset (what we want) without any attributes

[rcaneill]

gsw-xarray/gsw_xarray/_accessor.py

Line 206 in 71df00c

combine_attrs="drop",

Maybe it comes from this line?

[rcaneill]

I confirm that with "drop_conflicts" it works (I guess we may want to keep the "drop_conflicts"? Or use the default value?)