The "Button for transition" really has an unnecessary frame, I'll fix it with the next update. Or you can remove the frame yourself through the tyrano.css CSS file in your project by adding the following code to it :
button {
border: none;
}
You're also right, you can't change the position of the buttons, they snap to the anchors. If you need buttons in different places, then use the "Branch Button" or "Graphic button".
