That's odd.  I don't have any hand poses for V4 so I take it that these are 3rd-party poses.  Maybe something in the pose file is affecting a child (expectedly or unexpected) and the sword is being treated as some other prop?

C makes it easy to shoot yourself in the foot. C++ makes it harder, but when you do, you blow your whole leg off.

 -- Bjarne Stroustrup

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