Steps to reproduce:
1. Open attached project
2. Play "AnimationClipCase" Scene
3. Press button "Click to load" in the game view
-Animation clip is loaded correctly (not empty)
4. Build standalone and run it
5. Press button "Click to load" in the game view
-Animation clip is not loaded (empty)

Expected result: AnimationClip should load in build just like it does in the editor
Actual result: Animation clip is empty when loading from asset bundle in build and Animation Type is set to "Legacy"

Note: Animation clip loads correctly when Animation Type is set to generic etc

Reproduced on: 2017.4.3f1, 2018.2.1f1, 2018.3.0a6