Changing from Edit to Draw mode does not unselect anything

[M374LX]

It does not make sense to keep elements selected on the song editor in Draw mode.

[Sti2nd]

It does when you think about the way Piano Roll works with fast select by holding down Ctrl, and that the Song Editor will work the same way soon #1488

[tresf]

It does not make sense to keep elements selected on the song editor in Draw mode.

Fundamentally on some level this may be true, but the selection tool doesn't allow the moving of notes, so until that behavior is fixed what you are describing will only cause turmoil.