Hi, @domhnallohanlon! 
I noticed a bug, which can be reproduced with the following steps -
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Create a simple project, and make just one screen, which should consist of some visible elements, as well as some invisible elements. Such as,
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Add that screen to MyScreens. After adding, add that screen in the same app as a new screen from MyScreens.
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You would notice, the invisible components double themselves, and the visible/invisible components’ name, does not change.
Check this Project, I created and did the same steps as above, and the bug occured -
https://x.thunkable.com/projects/5e5c8bdb4af38975256e282c/bb0879f1-7aa2-4549-bf72-f722dbbfee90/designer
Also this video, featuring the above project -
Thanks! 