Steps to reproduce :

- create a new project
- create a Canvas and an Empty Game Object
- add the Horizontal Layout to the game object and make it a child of the canvas
- add a button, a text and an image as children of the Horizontal Layout and notice the are aligned
- add a Toggle as a child of the Horizontal Layout and notice that it's not aligned
- add a Scrollbar as a child of the layout and notice that the Toggle overlaps the rest of the elements

*Note :
Also occurs in the Vertical Layout Group.