Sometimes musescore adds the wrong notes
Musescore sometimes adds notes different from the ones I intend to add. When I go to add a note, I use the feature where you click where you want the note to go (since I don't know the names of any notes); but sometimes when I click, the note will go slightly above or slightly below where I clicked.
Comments
Zoom in more to avoid accidentally clicking in the wrong place. The mouse pointer is often not sufficiently precise about showing you the exact pixel it is focused on, so zooming in gives you more wiggle room.