Studies list navigation link in collection broken

[Alhrath]

When I select a collection and then click on "dataset", I get a list of the studies affiliated to the collection. But if I need to navigate to the next page (either by clicking on "page 2" or "next page"), I'm sent back to the page 2 of the "Central Data Catalog", loosing the collection variable. If I put back the collection name in the url manually (/index.php/catalog/COLLECTIONNAME?&page=2) it's working without problem.