Sorting indexed list doesn't work

[kcruijss]

When we're sorting a nested list directly from input it works fine: try it online
But when we're sorting after we've just indexed, it seems to sort based on the string we've indexed into for some reason..
Try it online to reproduce.

I came across it in this codegolf answer of mine.

[monkeygroover]

Case 1 sorts a plain iterable, case 2 sorts a lazy stream of iterable functions, seems like it doesn't apply the function before sorting.