Setting positions in Canvas not working anymore after upgrading to Unity 5

Unity Engine
1

Ever since updating my project from Unity 4.6.2 to Unity 5 I’ve had this issue and it’s been driving me crazy.

Here’s my setup:
I have 2 Canvases, Intro and Game
Initially, the Intro status is active and the game Canvas is disabled.
The Intro Canvas has a button which calls a method that deactivates the Intro Canvas and enables the Game Canvas. (Hitting escape at this point switches them back)
At this point everything works great.

Now here’s my problem. I’m trying to set the positions of some objects on the Game Canvas before it’s displayed. But the positions are not being updated (in a newer version of Unity. This worked fine in 4.6.2)
Now, if I hit escape, setting everything back the way it was and then click the button again suddenly the positions are set as expected. So it does work the second time it’s called, just not the first.

I’ve tried mixing up the order of setting the states and object positions with no luck. I can also set the positions pretty much anywhere else in code and it will work correctly. Just not here where I need it to.

Anyone have any ideas what’s going on here?

    public void LeaveIntroScreen(){

            guiState = GuiState.Game;
            IntroCanvas.SetActive(false);
            GameCanvas.enabled = true;
               
            tile[0].transform.position = new Vector3(83.0f,120.0f,0.0f);
          
    }

if(Input.GetKeyUp("escape")) {
      
      if(guiState == GuiState.Game) {
              
                GameCanvas.enabled = false;
                IntroCanvas.SetActive(true);
              
                guiState = GuiState.Intro;
      
            }
}
2

If I check the enable canvas checkbox in the editor and run the game, then the position sets as I would expect(only now my game canvas is visible when I don’t want it to be).

Based on the way it was working after disabling and re enabling in code (with the escape key) I came up with the slightly hackish fix to leave the Canvas enabled in the editor and disable it in Start(). I’m not sure why it works this way and not the other anymore, and not sure what would have changed between Unity revisions, but my save game data is finally working again.