Children may be a bone of contention (5)

I believe the answer is:

issue

I believe this is a double definition.

'children' is the first definition.
(thesaurus)

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

'may be' is the link.

(Other definitions for issue that I've seen before include "litter" , "particular edition of magazine?" , "Offspring; publish" , "Offspring or edition" , "Major topic for debate" .)

I've seen this clue in The Telegraph.

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