I just found out that it also fails without the dash.
It will still sort like this:
Samurai II Duel.txt
Samurai III Duel.txt
Samurai I Musashi.txt
So obviously the problem is with I, II, III followed by a space character. Obviously the space character has priority before a real letter character. Ubuntu fails completely to do basic sorting. Only if you add "." after I, II, III, only then it sorts properly. It's a mystery to me. Such basic thing should work. I hope this gets fixed. Because this tiny thing makes Ubuntu very hard for me to do effective work when confronted with messed up sorting of my daily files.
Update:
I just found out that it also fails without the dash.
It will still sort like this:
Samurai II Duel.txt
Samurai III Duel.txt
Samurai I Musashi.txt
So obviously the problem is with I, II, III followed by a space character. Obviously the space character has priority before a real letter character. Ubuntu fails completely to do basic sorting. Only if you add "." after I, II, III, only then it sorts properly. It's a mystery to me. Such basic thing should work. I hope this gets fixed. Because this tiny thing makes Ubuntu very hard for me to do effective work when confronted with messed up sorting of my daily files.