@George @Teodor
I checked it right after the update. And I am sure I am still not gonna use this. 
Of course I wouldn’t mind a cool powerful modern visual editor for expressions.
But we are still far away from that, so it is crucial to be able to just edit expressions as fast and easy as possible.
And it can be provided only by simple strict code editing.
I was not pleased by doing it in the current UI, so I have suggested implementing something like this.
But at least code editing was possible before.
Now with all data1&&data2 and data1&&data2 I don’t know how to do it at all.