Dot filter with type traversal

Is it possible to apply a dot filter on a field that is not on the type being filtered ie:

fieldA.fieldB.(someFieldOnFieldB == something) works

but

fieldA.fieldB.(fieldC.someFieldOnFieldC == something) does not work

I would need more info. Can you please file a ticket with a concrete use case so I can investigate/advise?

Actually it looks like dot filter is not supported with the at notation.

However a workaround is to use underscore JS filter method:
objs.at(“fieldA”).filter(function(f) {return f.someFieldOnFieldA==‘something’});