Repro steps:
1. Expose a gradient
2. Edit the exposed gradient in the inspector
3. Undo the gradient change while the gradient window is open
4. Observe how the gradient changes in the inspector, but not in the open window

Expected outcome:
The gradient window to update as well

Note:
- the issue does not reproduce with a C# or Shuriken gradient, or with gradients within the VFX graph window.