Yes - back for me too, but “Self Transfer” as you mention.

I wonder why FD offer the full connection on some occasions but not on others, even when the individual flights are identical (well…they offered it at least once when I booked, but seemingly not subsequently).

I also wonder whether they’ll honour the connection with bag transfer and not having to clear immigration in DMK when I try to check-in at SIN. I certainly won’t have time to do it.