I used the defrag freespace on an already defragmented partition and, after finishing, Defraggler fragmented four files which were not fragmented before. Then I notice no difference for using the Defrag Freespace allowing fragmentation. Both free space options create further fragmentation. I think the Free Space defrag should leave gaps opened but it shouldn't create new fragments.
Yes. I have experienced the same thing in DF v1.20. When I choose ""Defragment free space"" it acts like ""Defragment free space (allowing fragments)"". But it also acts the other way around. When I select ""Defragment free space (allowing fragments)"" DF acts like I have chosen ""Defragment free space"" (without ""allowing fragmentation"").
I like the GUI of v1.20 more than that of v1.18 and v1.19. It certainly has improved.
There're one or two very slight improvements in v1.20 that make me like that version more than e.g. v1.18 and v1.19. But then you'll have dig deeper into v1.20.