The Reset action clears the SkinnedMeshRenderer's bounds, reducing the bounding box to a zero-size point. Since bounding boxes determine rendering culling based on camera frustum visibility, this creates an unusual behavior: the object remains visible when its center point is within view, but disappears entirely once the center moves outside the scene view.
The selection issue stems from the editor's selection mechanism, which renders a much smaller 2x2 pixel frustum around the mouse cursor. With bounds reduced to a point, the plane's center likely falls outside this narrow frustum, making selection nearly impossible. Restoring proper bounds resolves this issue.
This case is being marked as a feature request rather than a bug because all systems are functioning as designed. However, we recognize the value in implementing more intelligent reset behavior for SkinnedMeshRenderer, and this improvement will be tracked on the team's backlog so that it can be considered in the future.