Asked before on Oct 15, 2016 but so far no adequate answer, therefore asked again:
PreSonus representative, please read this question thoroughly and fully go in depth regarding the matter prior to closing this question and let me know if you need further information from me or other users!
The current (or default) behaviour of the Stop [Num-Pad 0] key, equal to a Stop botton of an external device like a MCU, CS18, etc.:
1) When you press Stop for the first time the playback stops or the playhead goes back to the last playback starting point, depending on the setting Transport > Options > Return to Start on Stop, or with the Alt 0 key combination.
2) So if Return to Start on Stop is disabled, like transport behavior that most people use or want to use, when you press Stop for a second time, the playhead position returns to the last playback position. This is the best setting allows a flexible workflow for all situations.
3) Now when you press Stop another time the playback goes all the way back to ground zero of the timeline, so 00:00:00.000. This also happens when you press Stop for the second time if Return to Start on Stop is enabled. Most of the times this is not the desired behaviour and very inconvenient. When you have the Arrange View follow the playhead it even a bigger nag, then it drags you right out of the part where you were working at. Especially when that is e.g. a 2 hour live show or a double CD album.
Besides, there already IS a key for that, which is by default the [,] key or any key that is assigned to Return to Zero. So the behaviour is not even undesired but also redundant.
Please remove this functionality or, if any user would use this triple Stopping, add an option in the Preferences to enable/disable.
May I remind you that in Logic Pro X the behaviour is that when you press it a 4th time an accidental use of another pressing of Stop is recognized and the playhead again returns to the last position and toggles between these 2 positions each time Stop is pressed after.
Nevertheless I prefer to be able to disable the automatic functionality described at 3).