As the title says, I’ve been playing around with this all day, and every time I add a layout block to a page on my “portrait smartphone” layout, it ruins the arrangement of the layout blocks on my “desktop PC” layout.
Is there any way to add an element to one device layout without affecting the other?
In general @Gary what you place on mobile shouldn’t affect your desktop.
But Layout Blocks can behave funny at times.
I take it whatever you introduce on mobile that you go to your desktop and untick "Show On This Device"? If not this is a very important step.
If you feel things are just to weird in what the Layout Block is doing it would be a good idea to let @duncan know on feedback@sparkleapp.com