Rig/dummy randomly disappearing when on testing

[Ancesh]

As the title said, when I play my game to test some npcs, they’re just randomly gone. I have nothing anchored and Archivable is set to true. I’m assuming this is a roblox studio’s bug but I’m not sure. Does anyone have an explanation for this and how to fix it? Here’s some photos that was taken at the same place

In studio:

When testing/playing:

Edit:
I noticed when I test the game and look at the rig’s model, every parts are gone, just these are left.

What causes this?? I don’t have any script that randomly deletes stuff in my game

[SomeFedoraGuy (rusuRares)]

Apparently every part falls through what’s under it as everything is, as you said,

@Ancesh

nothing anchored

Anchor the Root of the Rig.

[Ancesh]

Thanks! but does this mean the rig wouldn’t be able to move since it’s root is anchored?

[Ancesh]

Also, this npc is supposed to chase me. When I anchor it, it wont chase me. But when I unanchor it, it’ll gone. What should I do?

[SomeFedoraGuy (rusuRares)]

Well, for starters, turn on CanCollide in the Root and Head parts. If that doesn’t work, also turn on CanCollide in tge Lower and Upper Torsos.

[Ancesh]

Update:
I’ve figured out what’s causing this. So I have a thing called BiomeHitbox in my game to determine the biome a player is in. In this case, the BiomeHitbox was colliding with the dummies making them forced to move to the void and dissapear. I’m sorry for this awkward problem.