Which text uses the word disinterested in its traditional sense?

 - As a financial advisor, Katie is required to give disinterested advice and to value her clients' financial interests above her own.
 - Katie has been feeling disinterested in her work as a financial advisor; she would prefer to spend more time on her own investments.
The first text uses disinterested in its traditional sense: unbiased or impartial.
As a financial advisor, Katie is required to give disinterested advice and to value her clients' financial interests above her own.
The second text uses disinterested in its nontraditional sense: uninterested or indifferent.
Katie has been feeling disinterested in her work as a financial advisor; she would prefer to spend more time on her own investments.
Most style guides recommend to use the traditional sense of the word disinterested because it is considered more standard.