Though I’m not a specialist in UI design, I can certainly add to the fact that having lists inside supposedly sorted list negates the purpose of arranging the items. Why arrange a list into yet another list? I would understand it if File Explorer was set to display icons, but I generally keep it in list view.

Instructions

If you are seeing the “groups” (the official terminology) on the File Explorer, you can disable it.

1. In File Explorer, Sort from Command Bar > Group By > Select (None)
2. The groups should disappear immediately.
   

Afterthoughts

Frankly, I don’t see how it hasn’t caught the QA’s eyes that groups in a list can be disorienting. If I arrange files alphabetically, only to be grouped by modified dates, in what order will I be seeing the files in? If it’s any way, shape or form, out of alphabetical order, that would defeat the purpose of having it organized alphabetically. In fact, I think list view is more than enough to find the files needed. The only possible scenario I could think of is using it in icon view, to create what is Windows equivalent of stacks.

It’s even more bizarre that the option is hidden away. Just like list view, the option to change the order should be accessible to the user at all times; it defeats the purpose of having a list view in GUI, if one must navigate into the menu to select ‘sort alphabetically’. Thankfully, as far I can gather, once the grouping is turned off, it stays off for the list view.