Looks like there is a bug with a new approving/rejecting suggested edits by post owner feature that leads to empty revision #3:
The text says that "39 characters were deleted " is exactly the same count as actually deleted by revision #2.
Original post tagged support was made by @Qwertiy on ruSO.Meta: А где содержимое правки?
+6 != (+13 + 4 + 40)
, but-39 == -45 +6
– αλεχολυτ Sep 3 '17 at 9:03