Musescore 4 doesn't treat duplet notes correctly.
In 6/8 time, a duplet should take up half the measure (2 notes with the time of 3 notes); however, it is only taking up a 1/3 of the measure (2 notes with the time of 2 notes). Also, the beaming is all jacked up.
In this series of attachments, you can see the progress of trying to add 2 duplets to a 6/8 measure, which should use up the whole measure. When I try to add the second duplet, instead it adds one note to the previous duplet and closes out the duplet - not letting me add the second note.
I don't use duplet notes very often, so maybe I am doing it wrong.
Comments
You should understand that to create any "tuplet", including duplet you should start by selecting a note or rest with the same duration of the whole "tuplet". Thus to create a duplet that fills half a measure of 6/8 you must start by selecting a dotted quarter note (or rest) before pressing CTRL+2. You seem to have started by selecting an undotted quarter note.
See https://musescore.org/en/handbook/4/tuplets
and https://musescore.org/en/handbook/3/tuplets (older version but working the same and this article provides more examples)
In reply to You should understand that… by SteveBlower
You are correct. I did start with an undotted quarter note. Your suggestions worked. Thanks