Unity hangs when zooming in the Curves view in Animation Window. This results in corruption of Controller.

Repro:
1. add a simple animation to a GO
2. add transform curves and two keyframes
3. in the Curves view: press Ctrl and scroll for vertical zoom - zoom for a few seconds then grab the vertical slider at the bottom and move it all the way to the left - to see the first key frame
4. Unity freezes
5. terminate Unity from Task Manager
6. open the project again
7. choose the GO, and notice it doesn't have the Controller component anymore, but the controller and animations that were created are still there.
8. add Controller component to the GO and add the existing controller to it.
9. Open Animation window and press Add Curve, replace the existing animation with New Animation. Unity Crashes