Can be seen after Rust update
NeXTA

3 months later, and im still being seen while spectating

Only a small percentage of users claim to be experiencing that issue (already in vanish, and then animals/NPCs start attacking you). The last person I helped troubleshoot that issue didn't even have the latest version of Vanish installed, and updating it fixed the issue. Please verify that you are using the latest version. If you are, then this would have to be caused by another plugin.
LiHvKmx1HZN21gq.jpg WhiteThunder
Only a small percentage of users claim to be experiencing that issue (already in vanish, and then animals/NPCs start attacking you). The last person I helped troubleshoot that issue didn't even have the latest version of Vanish installed, and updating it fixed the issue. Please verify that you are using the latest version. If you are, then this would have to be caused by another plugin.

yep still happening with 1.5.5.

yeah still happening  in vanish mode  afk inside a rock on a desert island  for hours  come out of afk and there is 30+ pigs around the rock screaming at the rock trying to kill me players are amused as hell ..npcs can see me  if shot  by me or someone else if i am close in vanish mode ..yes latest update of the plugin