Sometimes you might find that it seems impossible to select an element in the result view. The reason normally is, that the element is overlapped by other elements like the text in the example below:
You can click on the text in the element list on the left, but it might seem impossible to select the text in the result view on the right.
The reason is, that the text is overlapped by the container below, so the designer assumes, that you want to work with the outmost elements (the container and whatever elements, that are placed in the container).
If you want to select the text in the result view e.g. to drag it to a new position, then you need to click and hold down the <Alt> key while you select the element with the mouse.