Same thing here, even in just released version 5.8.4 Viewing actual fields show in proper order. But when editing, within a repeater (and all children repeaters) the fields within reverse order. Top level items don’t reverse (but only testing with one file right now).
With 5.8.3 the order of top level and repeater items would be random, or sometimes simply reversed.
Same issue… some of it still present in just released version 5.8.4 sadly.
Top level items do not reverse order, but all items underneath repeater (and child repeater beneath it) are still flipping.