Bug: add_artist(copy(Vector3D)) not working

[tjstienstra]

When creating a time-lapse the obvious solution would be to just copy and add an artist again to the axis. This works fine for points, circles, etc. However, it does somehow not work for vectors.

• Create minimal reproducer.
• Find exact error and possible solution. Is it in copy or add_artist?
• Implement solution and create a test.