This happened because it was attempted to access or set the
non- existent pixelspace offset of these audio strips. It is fixed by
applying the "paste at mouse" behavior only for strips that would be
rendered, which excludes sound strips implicitly. This has also
benefit, that strips with effects would only change position of the
effect thus avoiding double transformation.
Pull Request: https://projects.blender.org/blender/blender/pulls/145819
46ad17f351