Niagara Issue - Won't load correctly

Hey all,

I am having a rather basic niagara setup where there is a mesh emitter:


In the Niagara UI it works perfectly, in various Blueprints I use it it works perfectly.
In some though, it ignored completely my mesh location and looks like this:

what can cause this? I am literally copy-pasting the Niagara object from the Blueprint it works at, to a new one - but getting this result as if the mesh location is disabled.

Thanks a lot in advance

OK I found one trick,

If I add the actual emitter-mesh to the blueprint and have the Niagara object as a child, then it works… can’t explain why