Reproduction steps:
1. Open the attached “IN-137733” project”
2. Open the “Scenes/SampleScene” Scene
3. Select the “Canvas/Panel” GameObject in the Hierarchy window
4. Open the “Anchor Presets” popup under “Rect Transform” Component in the Inspector window
5. Hold Shift, Alt, or Shift+Alt keys
Actual result: Options do not change
Expected result: Shift key enables “Also set pivot”, Alt key enables “Also set position”
Reproducible with: 6000.3.0a2 (d454866889d5), 6000.3.12f1, 6000.4.1f1, 6000.5.0b1, 6000.6.0a1
Not reproducible with: 6000.0.70f1, 6000.3.0a1 (4592b02ab560)
Reproducible on: Ubuntu 24.04.4
Not reproducible on: Windows 11