I was investigating this. So in Hopscotch, there is a bubble that appears over whichever parameter/field you are editing. (It is called a ‘field editor’ — some other apps use this too)
The field editor was adding ... to text, rather than just displaying the first line of the bubble underneath.
For this text:
hello
world
the bubble underneath is showing hello while the field editor is showing hello w... So that was contributing to the double effect.
(You can see the field editor with the teal outline and transparent background, in front, in this ‘3D’ view of the editor)
Yeah as others mentioned, it is in Xcode for debugging — it just visualises the layers based on their z-index or how far in front they are (like z index in Hopscotch or Bring to Front/Send to Back). Unfortunately it pauses the app anyway, so you can’t code in Hopscotch on the simulator while in that view. But coding in a 3d version would be interesting