The appearance of some prefab appears somewhere else but their collider stays in the good place, that to make?

Hello,

I have big one concerns with unity since yesterday evening, in my scene my prefabs is imported well and put as this:

PICTURE

But once the scene thrown there playmode some prefabs go spawn except map BUT their collider is on the good place in the zone of game:/

There is just their appearance which goes somewhere else

PICTURE 2

I made several tests and when 1 only object is activated he is indeed on his place but when he there 2 their appearance go except map.

Please i need help.

Thancks