surfaceTransformPoints rollPitchYaw inconsistent

I am using the surfaceTransformPoint utiity from the official latest release v1812 and found the results from using the utility with roll, pitch yaw angle at the same time inconsistent with using the utility three times sequentially specifying the same angles.

Also, when comparing the location of an arbitrary point on the STL with the results from octave using the rollPitchYaw rotation matrix the results are consistent with the sequential use of surfaceTransformPoints but not with the use in one shot.

Am I missing something or could be this a bug?