Hello,
I've got an idea for a new event called "PlayerStopDiggingEvent" or maybe "BlockBreakAbortEvent".
Currently it isn't possible to detect whether a player has abort the digging process, that's why I would love an event like this.
I did also some research and found out that the method "PlayerInteractManager#e()" will also called when this happens. I would also implement this event, if you like this idea.
Thank you for your time