1. In narrow responsive view (e.g. mobile), there are no visible buttons to create numbered or bullet point lists:
2. Text alignment editor buttons are shown once in a dedicated 'Alignment' dropdown menu and then a second time under the overflowed 'More options...' section:
I do take note that in the text editor HYS it was stated that the toolbar editor would not complain when/if specific buttons were added multiple times, but for presumably default behaviour having the four alignment buttons added twice just seems unnecessary.