NicolaRulli

I make a range selection of ONE note (or chord, or vertically aligned notes/chords across different staves) and the whole tuplet gets affected, even though only ONE of its elements...

That's an interesting discriminating factor. Next time I encounter a bug on notes beamed together, I'll make sure to check whether it also applies to beamless notes.

Update: it's actually ONLY a matter of beam, not of tuplet. The same happens for any two beamed eighth notes, for example.

I just found that the beams also prevent mass-adjustment of Y position, even if all notes on the beam are selected. I'll make a separate issue later if I have...

Additional interesting interaction between two bugs: Selecting an area that includes beams will prevent editing the Y position field even thought there may be non-beamed and non-note contents, however changing...