Postman Public API - GET Collections returning duplicate results

My question:
We have noticed the postman public api endpoint GET Collections now returns duplicate entries, this is happening for all newly created forks of our Collection but isnt happening for existing forks under the same collection.

In CI we use the postman API to get and run the collection matching the pipeline branch being deployed which was how we spotted the duplicate data being returned from the curl response

Details (like screenshots):

Many thanks in advance