Btw, hitting my 30kg PC box did not help at all. It only made me feel hurt. :)

What are your Prox settings exactly? (distance, PC, NPC, Once Only)

I just tried it again and it did not beep for me. Maybe try it without any plugins.

All plugins removed.
[x] Proximity Warning 5000 meters, [x] PC Prox, [ ] NPC Prox, [x] Only Once

Still does the same. It beeps when the guard is undocking. Once the guard is out, unchecking/checking PC Prox does nothing while checking NPC Prox makes expectable beep. Looks like VO consider undocking guard as a PC and undocked guard as a NPC.

I do not think this could be caused by any plugin but I have removed them all for this test.

One more detail, undocking Strike Forces and Arena Seekers do not beep on and do not comply with [x] PC Prox like guards do.

I am not sure if you have noticed in my prior posts, undocking guards do NOT make a beep with [ ] PC Prox.

Thanks for the data. Very confusing. Hmm. Perhaps there's a race condition where your client doesn't think they are NPCs until shortly afterwards. That would explain why i'm not seeing it (being closer to the server) and you are.

Ok, I made a change that may fix your problem. It'll be in the next client update.

Yeah, works. Thank you.