Duplicates and number duplicate groups option

There is problem with this new "Number duplicate groups" option or I don't understand it.
I don't know why but sometimes, number don't start to 1. Yesterday, group starts to 8, today 2. Look...



Now, I have suggestion.
If I use "filename and size", why groups header start by size then name ? Name then size will be better.


If I use "checksum", why groups header start by size then checksum ? Checksum first (why size is display?)

No news about this ?
Today, after some test, I have this...


It's already fixed for the next update.

What sort of news are you expecting, exactly?

If it's a bug or if i don't understand this new feature ?
And if my 2 requests about group header are justified ?