Question Double individuals

I ran Graphs - Statistics and in the "maximum age of death" result of the females I found some double individuals, if I select them and go to the respective family I don't find them double. I attach the gedcom record as an example of a double individual. How can I realign the double ones?Thank you
     

Without seeing the GEDCOM for the family record at @F883@ I can’t say for sure what the issue is, but I suspect that one of the Individual_Records does not have a pointer from the Family_Record back to the Individual_Record.

It should look something like:
1 CHIL @X16@
1 CHIL @I2276@

but I suspect one of them is missing!

To see the two children listed in the family you would add the one missing, but to remove the duplicate you would need to delete the Individual_Record that is not listed!

The INDI has more than one NAME (Nome) entry, with different/no TYPE. Every name entry leads to the same INDI.

May be that is a bug or a wanted simplification, to get quick results (I think this is the reason).

I selected X16 INDI and then printed the GEDCOM of the family, then I selected I2276 INDI and printed the GEDCOM of the family that I have attached here. I remember that these individuals whose duplicate records I have were inserted by a user, who I then verified and approved; If this can help you understand the problem. I am suspicious that there may be other duplicates as users have inserted several which I then approved. A tip to check if there are other duplicates.
Thank you.

Control Panel > Family Trees > Select the affected tree > Find Duplicates

From your site, the search results for Emma Bendinelli born in 1869 shows her as individual I2270, daughter in family F883, and again as individual X12, daughter in family F883 as well. Note that only X12 has "herself" tagged in the family with parents, so I2270 can be safely deleted.

As stated before, the link from Family back to Individual seems to be missing, which is likely why an editor decided to add her again.

Not adding such a link does occasionally happen to me as well in webtrees when the internet connection is flakey and requests have timed out, or when the server is too busy with other tasks.

I suspect the other cases are similar. Using the control panel you can find other cases.

and be carefull. there may be false duplicates.

Thanks, with your suggestions I realigned the tree and now there are no more mduplicates.