I am going through and reviewing polish translation of MuseScore.
I found that there's a "Chord Automatic" option of Anchor property in Anchor Properties. According to an explanation @lasonic made 6 years ago:
"it means that if the user adds an articulation to a chord (a single note being a chord of 1 note), MuseScore will choose to put the articulation below or above the chord depending of the stem direction."
But it doesn't work that way. It looks like it depends on direction of the voice:
Does it mean it's a bug (broken regression)?
Anyway, the "Chord Automatic" label isn't clear enough, especially that - by definition - a chord consists of multiple pitches (notes).