When I enter a new pattern in an empty slot, the song is renamed "Custom" but if I move away from it, the changes don't stick - it reverts to the preset. And the manual makes no mention of doing anything special to retain.
Doesn't matter which song I modify (using "Clear All Slots" or any song having a few empty slots), it changes to custom, but "Custom" never sticks, and I can't figure out out to rename it to a custom song name or keep the configuration without manually setting it up.
Selecting empty slots
Choosing a new song pattern
Clicking away and coming back : custom pattern is lost !
Can somebody help ?