That is correct, if you access Ancestry through your library than you have to search from the Ancestry page itself, not through the Steve Morse portal.
I also access Ancestry through my library, and have noticed that.
When searching also remember to try www.familysearch.org which is free and has some databases that Ancestry does not have.
Searching: RATOWSKY / CHAIMSON (Ariogala / Ragola, Lith.)
WALTZMAN / WALZMAN (Ustrzyki Dolne / Istryker, Pol.)
LEVY (Tyrawa Woloska, Pol.)
LEFFENFELD / LEFENFELD / FINK, KALTER (Daliowa/ Posada Jasliska, Pol.)
BOJDA / BERGER (Tarnobrzeg, Pol.)
SOKALSKY / SOLON / SOLAN / FINGER(MAN) (Grodek, Bialystok, Pol.)
BOBISH / APPEL (Odessa?)