Build problem in mobile

There was no build option. I built it by trying a different way and opened the android preview mode again. Everythings works. But I have a question.
This is my step, Please look:

Level1 is now in the old view without build. Level2 is built, looks good. What do you think?

As far as i know its not a bug, cos reflection probes for mobile must me baked with sm5 shader model.