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Propagator results are NaN without throwing error

In the vertex fitter the propagator is used to propagate track parameters to a target surface. In some cases the propagation result is ok(), however, endParameters->parameters(), endParameters->position() and endParameters->covariance() are all NaN.
Example track where this happens: initial parameters q=(-0.078,-141.138,-2.166,2.628,0.834,0.006) propagated to target perigee surface at (-16.64,-47.59,-43.88).

Edited by Bastian Schlag
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