I needed some temporary squaring pieces for a frame I’m putting together, so I opened a new design and created a 6" square using the design tools, then added a line bisecting it diagonally. Then I selected both shapes and copied/pasted them. This created a third thumbnail-less object in the settings list on the left:
So…the lack of thumbnail is weird, probably a bug? The fact that copy/pasting a square creates a second object while copy/pasting a line keeps the copy and original as one object seems inconsistent, not sure if that’s a bug or a “feature.”
Any of the features that can be structurally modified will create a new layer when copied. You can change the size of a line or circle but copy a square and it can become a rounded corner or even a star shape so each case gets its own layer.
If you copy an outline, the offset value can also be changed so that too gets its own layer. All these initially come in very tiny, but as soon as you do anything with them they pop out to the scale of the layer image.
Thank you for brining this to our attention! What @rbtdanforth shared regarding shapes which can be modified with things such as rounded corners is correct; when they’re copied and pasted it is expected that they will create another print step in the list.
I’ve taken detailed notes about the blank design step thumbnail that is being created and I’ll share them with our team. We’ll follow up here if we need additional information while we look into this.