Unreal Engine Issues and Bug Tracker (UE-173829)

Steps to Reproduce

Open any default skeletal mesh, such as "SK_Mannequin".
In the editor, set bones to remove, for example "hand_l" at LOD1 or higher level.
Click "regenerate LOD" button.
In the preview window, set character-Bones to "All hierarchy" and we could see the joints are drawn in the viewport.
Set "LOD Auto" to "LOD 1", the preview joints disappear.

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Fixed

Fix Commit	22991473

Skeleton preview disappear at LOD 1 with "bones to remove" enabled.