Duplicating of elements with Ctrl + Shift + drag onto a score

By working on this bug yesterday: #91536: Ctrl + Shift + drag causes a crash for the figured bass symbols, I met a behaviour a bit surprising, or rather, I did not know for my part!
By holding the Ctrl + Shift keys within a score, and by dragging elements to a note or rest (by highlighting them, or not, for some elements eg lines and dynamics) to another note, you can duplicate these elements also long as you like. In fact, it's a very good copy-past, without the "real" copy-past!

I just began to experiment. But in principle I think it may be a good time saver. For example, for the fingerings. To copy and paste in the usual way, you need to do: click for select -> click copy (or Ctrl + C) -> select the second note -> (past, or Ctrl + V). That is to say four operations. By using and holding Ctrl + Shift, I have to just drag and drop the item from one note to another note. That's all!

And knowing that the last copied item becomes the reference element and so, it is always "pasted-duplicated" very closer to the next note. You stay onto the score and in an easy and comfortable space, unlike the fact of making the same action by the palettes eg (or by the usual way to copy-paste as I said)

For the lines, it's the same thing. We know that the ability to copy-past the lines is not implemented. By this way, they are! Or they are duplicated, I do not know the right term would be: probably duplication.
I do not think this is a feature? Or so I had completely forgotten ... or ever tried.
In short, why I had not understood this yet? I have not seen this operation documented or seen and read on forums (for now). Or have I missed something?
For the record, are concerned the elements of the palettes: Arpeggios and Glissandi, Breaths and Pauses, Articulations and Ornaments, Accidentals, Lines, Fingering, Dynamics, Tremolo, Repeats and Jumps, Tempo, Text, and Fretboard Diagrams.
Many, many elements! :)