Bug? Not being able to join to layers

I created one circle and one triangle (circle with 3 edges). They are located in two different meshes. When I try to join them…one of them disappears. Did you experience this?

Thank you

What version are you working on?

With Blender 2.82, I create a circle then a triangle.
I select these two objects and join them with CTRL + J. . . and it works fine …
What exactly is the problem you are having?

I am also using that one. I think it was a one time problem. I was just doing that and one mesh got erased. I started the scene again and worked. I apologies for misusing the forum and thanks for trying too.