Ajax filter duplicating items

Hey,

So I've been running into a problem where when I select a Category, there is item with sku ex: 1234 on page 1, and when I go to page 2, item 1234 is there again.

This can be confusing and annoying for our customers, anyone know why this is happening?

Same here. The total number of items per category is correct so, while some article is duplicate, others are missing.
I opened a ticket a while ago, urged the helpdesk a couple of times for a response, but never got one.
Have you found a solution?