Sprites not starting where they're placed


I am making a 2D game and a have placed a number of sprites exactly where I require them. So far I have placed 45 sprites.

When I preview the level I’m finding that some of the tiles I have placed are moving to position 0,0. When I build and run I’m finding the same thing.

This doesn’t happen all the time. The tiles that move to 0,0 are different each time I preview or run the build. There are currently no scripts in the game yet.

How it is supposed to look…

An example of what is happening.

Does anyone know why this could be happening? I am unable to determine why.

Thank you.

Ive been banging my head against this for a few hours now and I figured it out. I had a Ridigbody 2D and a Collider on it. As soon as I took the Rigidbody off the sprites stopped moving. Is this a known issue or was I doing it wrong? (O’m betting my newness meant I was doing it wrong by putting both on there?..)