Basically, If i add an app to desktop then copy Properties from another icon without detaching the new one from the grid first lightning crashes and gets removed as the default launcher !
I've added a link to a screenrecord gif on imgr to make this a little more clear
![👍🏻](//cdn.jsdelivr.net/emojione/assets/3.1/png/64/1f44d-1f3fb.png)
http://imgur.com/a/2NNUgY0