Why character start to go by himself after the build level?

Hello, I use standart FPS Controller - "First Person Character" - from the Standard assets folder. Previously I created new Project in seperate folder and copy there folder "Standard assets". Because FPS Controller don`t work when it located in folder of another project When I activate Game mode within Unity editor - FPS Controller work good, but when i create Build and run it character begin to go by himself - to left-forward direction. How it possible? In another engines you just need to place the object like "Player Start" and press play - without scripts and copying folders, and all work OK... How to fix this bug? Can there be some simpler method to put a character in the scene? I just need to be able to walk on location