Duplication bug in Minecraft version 1.12 to 1.13-pre1

If you want information on how to make this bug, Here is a video in French.

 

To make this bug, you need a piston, a button, an item frame and the object to duplicate.

 

As shown in the video above, put the piston, a button next to it so you can activate the piston, put the item frame behind and put the item to duplicate. Then, activate the piston and when it retracts, remove the object from the item frame by a mouse click. You may need to start over to successfully duplicate the object, as shown in the video.

 

Hoping for a fix on this bug. Thanks, Chroma' !