Nav mesh don't work on launch

Hi, I’ve just create a new test project to isolate my problem,

I’ve create a character blueprint, 2 levels and one AI controller :

  • In the first level, I Have one button who do an open level node to the second level
  • In the second level, I have my character blueprint
  • And the AI controller do a simple move to location of my character to 0.0.0

My problem is : When I play in editor, all work perfectly but when i launch on my phone, I click on the button to go in the second map and after that, my nav mesh don’t work and my Character Blueprint don’t move…
Thanks for any answers !