Dot placement in voices 2 an 4 erratic.
For dotted notes in voice 2 and 4, the dot is placed below the lines when the notehead is on a line.
This is incorrect. The dots should always be above the line, regardless of voice.
When this happens in a chord, some notes in a dotted chord looks as if the dot is missing because
it coincides with a dot in another voice that is set above the line.