unable to create mesh in animation scene

Ok that s a thing that i got in a scene but i can t identify why. When i create a mesh in one of my scene i got nothing at all except, the pivot point. but the object is invisible and its bounding box is 0 0 0. i suppose it s a bug but i did not knwo how to reproduce it.Any help to find what s wrong would be cool.

I doubt it’s a bug. What do you mean “create mesh?” How are you trying to do this, exactly?