Each of the three canvas in the attached project is animated. When the menu transition is happening, Main Menu canvas is supposed to go up off the screen, while the Leader board (or Levels) Canvas is supposed to go up on the screen where the Main Menu canvas was previously.

The animations of both canvas are triggered at the same time, and I'd expect them to be executed in sync.

After a few times of animating the canvas - by switching between the menus back and forth - the animations fall out of sync.

It's the same problem in both the Play mode and the editor.

2. How we can reproduce it using the example you attached

1. Open the main_menu scene and play. (or build and run)
2. Switch between the menus using buttons - the animation is at first in sync (see the canvas_animation_EXPECTED.swf - video attached)
3. After a while the animation comes out of sync (like on the canvas_animation_UNSYNC.swf)