Pasting bones from the same file causes the bones to be moved rather than copied

What:

Pasting bones from the same file causes the bones to be moved rather than copied

Repro steps:

• Open the Skinning Editor
• Select a Sprite with mesh + bone data and copy it
• Paste the data onto another Sprite

Expected: An additional set of bones are created for the new Sprite.
Actual: The bones moves from the copied Sprite to the pasted Sprite.

 

Tested with:

• Unity 2023.1 (2D Animation 10.0.0-pre.1)
• Reproduced in 22.2, 22.1 and 21.3. Doesn't happen in 20.3.

 

Pull Request
[Internal link]