Reproduction steps:
1. Open the attached “OptimizeGameObjectsBug.zip” project
2. Open the “Scene” Scene (Assets > Scenes)
3. In the Project Window, select “Weenie.fbx” (Assets > Models)
4. In the Inspector, in the Rig tab enable “Optimize Game Objects”
5. Click “Apply”
6. Observe GameObjects in the Game view

Expected result: Both GameObjects are visible
Actual result: Only left GameObject, with one Animator Component, is visible

Reproducible with: 2021.3.45f1, 2022.3.50f1, 6000.0.23f1, 6000.1.0a1

Reproducible on: Windows 11
Not reproducible on: no other environment tested