It looks like maybe there isn't any content in the button - which is curious b/c there is still a button and it has different text than the "not cloned" version. The green arrow below shows the content in the section above it and the red arrow show the lack of content in the "First Link" box.
By comparison, you'll notice the "not cloned" version has text in the panel (right) which matches the button text (assuming you've got some CSS uppercasing those letters)
1. Are you using images for buttons or is that live text in a <div> or <table>?
2. Can you post a file w/ the HTML or copy/paste the piece for that button (from the template) that you're having issues with? I've seen this type of strange behavior with nested editable elements, or funky syntax. You might also try the "Validate HTML" feature in the editor (top left) and see if that can catch any errors for you?
First of all, thank you for looking into this.
I've just tried to duplicate this behavior to no avail. It seems like this issue has been solved.
Thank you nonetheless for your help.
Rafael Ramalho & Pixelmatters team