Bluetooth devices doesn't show up in Listpicker

[ABG]

AI2 has undocumented copy/paste (Ctrl-C/Ctrl-V) features in the Designer.
It doesn't take long to copy whole Arrangements from one Screen to another.
The accompanying blocks ride along.

Select, Copy, Paste component and Screen in Designer

From version nb184 (July 30,2020), we can copy components and screens in the Designer. http://ai2-test.appinventor.mit.edu/reference/other/editing-functions.html - Select, Copy and Paste one o more components. [Copiar-Pegar] - Select multiple components and change a Property. [Select] - Select and Copy one o more components and Paste it as text in a text editor, message, ... [Copiar-Pegar] [notepadd] - Select Screen Copy and Paste it as text in a text editor, message, ... [screen…