I'll explain briefly. In the Song Editor section, I want to open the Piano Roll of an instrument, so I go and do so. The problem is, right clicking the item I want to edit on, piano roll does not open despite me clearly pressing on the item to do so, and when I try to double left click, it doesn't work either. I have literally no idea what I did here, and it is becoming disruptive, and halting my progress as I cannot create notes. I cannot edit new instruments, and can only remove them. No pictures to show, and besides, this should be enough information to get an idea of my problem.
On wich version of LMMS does it happen ?
What's your OS ?
(I can't help, but this informations may help those who can help you)