You don't mention what car this was done to.
In any event, did you do final torque on the suspension fully loaded? The control arms in particular usually require setting torque fully loaded at ride height.
Wheel bearings should be checked again after run in especially after repacking. Could be loose now that excess grease has been pushed out.

Lastly, could be the steering box has some slop. Verify the other things first, and after alignment if the problem persists. Look at steering box adjustment.

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Stable Mates:
1987 300TD 310K mi (Hans)
2008 Jeep Grand Cherokee OM642 165k mi (Benzrokee)