Loops in Library Lag Behind Playback

Hi, I'm a Logic Express newbie.
Things seem to be working pretty well, but whenever I play a composition and try to select Loops in the Library for previewing in realtime, the loops each take about 5 seconds to start playing. When I have nothing playing, the loops play instantly.
Is this normal behavior? In Soundtrack and GarageBand I can instantly preview loops while playing my composition. Is there some sync setting I need to adjust?
Thanks in advance!

Yes, I guess it does snap to the next bar. But it doesn't make much sense (and is pretty disappointing) considering it breaks the ability to preview dozens or hundreds of loops in realtime, an ability that lesser apps (based on the same Logic engine) like GarageBand and Soundtrack have had since their inception.
I'm going to log a feature request with Apple and hold off on purchasing upgrades to Logic Express (including Logic Studio which I was considering) until this is addressed, because I edit compositions that contain many loops and this issue is not present in less expensive apps like GB.
Thanks for the reply.

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