I know there are other threads about APFS but they do not seem to address this issue directly.
I apologise if this issue should have been posted elsewhere.
I have an app which plays and animates midi files. The user is allowed to select from a hierarchical listbox of files and folders to build a play list. For years, the list has displayed files/folders in alphabetical order. I “upgraded” to High Sierra and suddenly, the list was displayed in an apparently random order.
Cutting a long story short, I found some small print saying that under APFS, files/folders are retrieved in hash order and not lexicographical(alphabetical) order (as with HFS+). Installing High Sierra had made my filing system APFS with unforeseen consequences.
In my case there is an easy solution - sort the filenames after loading.
This is just to warn other users of Xojo.
But - please anyone - correct me if I have made a wrong conclusion. And perhaps let me know if there is any other solution for the long term - especially for others where a simple sort may not produce the correct results. And are there any other consequences?