A collection reveals additional products as you scroll. That observation alone is incomplete: establish whether products outside the first view remain reachable through meaningful addresses and links.
Inspect the delivered HTML for pagination or a real next-page link. A button without a linked address can behave differently from normal page navigation. Shopify’s Liquid paginate tag supports divided lists, but a customised theme may alter the implementation.
Follow a product beyond the initial selection
Choose a published product appearing later in the collection. Open the collection without stored session state and follow its navigation. Record the destination URL, expected product and return route.
Then request the next-page address directly. It should deliver the intended list section rather than silently returning to page one. Where the theme adds incremental loading, check that the underlying navigation remains useful without that enhancement.
Compare canonical links and internal references as well. A later page listing different products is not automatically equivalent to the first page merely because both belong to one collection. Avoid applying a blanket canonical rule without assessing the content.
Repeat the task after a theme change using another product from a different list section. Request the final list section directly by URL as well.