Are you rendering a single frame or an animation? What happens if you render in Arnold? Does it move to 0,0,0?
A couple of things to try. Make sure there are no animation keys on the sphere. Do a Transform Reset on it. And, make sure it's not part of a group or attached to anything. I'm not sure these will solve it but it will help you diagnose.
Also, this sounds like something better solved on Chaos Group's V-Ray Forum. Have you posted the issue there?
Can you upload the scene. I'll try it and see if it happens here.
Rob Holmes

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3ds Max (2023-2025), V-Ray 6.2, Ryzen 9 3950-X Processor, DDR 4 128MB, Gigabyte Aorus X570 Master motherboard, Sabrent Rocket NVMe 4.0 M.2 drives, NVidia RTX 4090, Space Pilot Pro, Windows 11 Pro x64, Tri-Monitor, Cintiq 13HD, Windows 11 x64
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