Entity moves with camera

Hey Guys,

So I wanted to create a light Source for my Lamp. I created the entity in the Level (Viewport) and added a “Projector Light” Component.

Now this entity moves whenever I change my camers-view into the viewport. So I cant position the light Source properly. Anyone an idea why only this Entity does not want to stay in a place`?

All other entities: Structures, Vegetation dont get influenced by my camera movements.