When playing on piano roll, there is an option on the tool bar to stop the current playing and to pause it.

The difference between them is that stop will go back to the 0:00 position, while pause will maintain the current track position, what I want is to correct a bug that Stop and Pause button have the same hotkey (Spacebar), and that is boring me to death, I don't want to be going back to 0 every time I press this key.

What I recommend is having Spacebar for Pause and Shift+Spacebar for Stop, I would program this myself, but I really don't know where is the controller for that.

There is a screenshot I made showing that the hotkey are the same for these two options