When anything leaves the Scene Window View, stop working...

Everything is working perfectly in my game, until the moment when the player leaves the Scene View (screen to the developer see the game on perspective or 2D, anything related to the game, I think) and stop working all animation commands and stuff, and when the character enters again in the Scene View, it works normally. This started a day without a reason, I did not changed anything in the code or program, what could this be? O.O

Note: My English is very bad, sorry >.<

I discovered… it was because the animator was not always marked the option to animate, it was based on renderer >.>