Reproduction steps:
1. Open the attached “repro_IN-94627“ project
2. Open the “Assets/Scenes/TestingScenes.unity“ Scene
3. In the Hierarchy, expand the “Canvas → Panel → Image → AudioSettings → Sliders“ GameObject
4. Select all three child GameObjects (“MasterSlider“, “MusicSlider“, “SFXSlider“) at once
5. In the Inspector, in the “Rect Transform” Component, press on the anchor point selection
6. While holding the “Alt“ button on your keyboard, select the anchor point in the middle
7. In the Scene view, observe multiple sliders merging into a single slider
8. Press the “Ctrl + Z“ button combination on your keyboard or select “Undo“ (“Edit → Undo“) in the Editor menu
9. Observe the sliders in the Scene view

Expected result: Previous changes to the sliders are successfully reversed and multiple sliders appear again
Actual result: Previous changes to the sliders are not reversed and a single slider stays visible

Reproducible with: 6000.0.37f1, 6000.1.0b5, 6000.2.0a3
Couldn’t test with: 2022.3.57f1 - Consistent crash when opening the “TestingScene.unity“ Scene

Reproducible on: Windows 10 (22H2)
Not reproducible on: No other environments tested