Wanted: GUI Editor option to disable Shift-Click item cloning

Shift-Click on an item in GUI editor creates a clone of that item.
This is not suitable for people (like me) used to work in environments such as Windows or Google Docs where Shift-Click means multi-selection.
Because the Shift-Click clones an item without clear visual feedback (the new item overlaps the old one and looks identical), it may happen that you create a number of "cloned ghost items" in your project without noticing it.
I have seen such ghost items in projects created by other people, too.

I will not suggest to change the behaviour of Shift-Click in GUI Editor, because some users are probably OK with it.
But for us who will never get used to it, I suggest to implement a simple checkbox option in the GUI editor:
"Disable Shift-Click cloning". When this is checked, Shift-Click would do nothing.