To reproduce:
1. Open attached project ("case 879381");
2. Choose Text in hierarchy;
3. Make sure in Inspector window first is Outline component and then Shadow component;
4. Open animation window;
5. Try to change values in Outline.Effect Color.

Expected result: You can change values of Outline in Animation window without swapping components.
Actual results: Values don't change.

Workaround: If you switch Outline with Shadow components in the Inspector, then you can change values in animation window for Outline.

Reproduced in : 5.4.4f1; 5.5.1f1; 5.6.0b7

Note: pictures attached.