Rotation in CCSprite doesn't work when user changes the timeline to 2 secs and try to fully rotate the sprite in two frames.

[Shahidwerplay]

1. Launch Application.

2. Create a new project.

3. Drag and drop a CCSprite onto the stage.

4. Select the CCsprite, and click on File > animation > Insert key frame > rotation.

5. Set the marker to one sec, rotate the sprite in 180 degree through stage.

6. Click on File > animation > Insert key frame > rotation.

7. Move the marker from one sec to two sec, rotate the sprite from 180 degree to 360 degree through stage.

8. Set the timeline duration to 2 sec, and select default timeline.

9. Click on play button.

   --Result: Rotation in CCSprite doesn't work when user changes the timeline to 2 secs and try to fully rotate the sprite in two frames.

SB Version: Latest Develop Branch (2.0)
SB Revision: 3c4db04
Mac OS 10.10.0
XCode 6.1

Video:https://drive.google.com/file/d/0B5-RfBatv-b8ZzJJS0x0NmdqVk0/view?usp=sharing