Children? A bone of contention (5)

I believe the answer is:

issue

This clue is a double definition.

'children?' is the first definition.
(thesaurus)

'a bone of contention' is the second definition.
(thesaurus)

(Other definitions for issue that I've seen before include "Problem - child" , "Subject, result, or publication" , "outlet" , "Point under discussion" , "Emerge" .)

I've seen this clue in The Telegraph.

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