I had the same issue when the dealer replaced my left axle and one control arm bushing. Had to realign after the repairs because the X pulled to the right. I suspect that the alignment I'd had done 3 months before the repair had the camber and toe set with a bushing that was worn, thus not exactly centered. Putting the fresh bushings in changed the effective length of the control arm. Granted it was probably tenths of a mm, but even that could be enough to change the camber by a degree or so, and the toe by enough to put the steering wheel off center. Realigning cured the problem in my case. And yes, left front camber was off.

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'04 E53, 4.4 Sport
'97 E39 528i
'86 911 Carrera, track car
'96 BMW R1100R