Sprite mesh creation changes sprite's size and pivot point

Hello, I create my sprites in the Sprite Editor and then create the sprite meshes and edit them inside the Sprite Meshes Editor; if I switch back to the Sprite Editor, the size and pivot point of the sprites I created the meshes for, are changed..if I set them back and hit apply, the Sprite Editor refresh but the sprites go back to the wrong values.

Is it a bug or is this normal with Anima2D? Thanks.

Edit: I'm using Unity 2018.3.9f1 and the latest Anima2D.