All sorted, so I set my items per page to 100 and it showed up, but wasn't present on my last page of stuff when only 10 items were showing

I just bought a starter pet and couldn't see it and your solution (viewing 100 per page) worked for me. Would be nice if this gets corrected.

This problem occur consistently if you have exactly 4 pages of content. For me it happens if I view my inventory with 50 items per page.

If you have for example 5 pages or more, it will display as "1 2 3 ... [max page (e.g. 5+)]", like this:

The 4th page is the cut-off page in these cases. However, the inventory seems to not have been scripted to take into account the 4th page itself when there are only 4 pages, showing only "1 2 3" instead of "1 2 3 4", like this:

You can get to the last page by using the "go to page" counter as shown above, or change the items viewed per page.

Or by clicking the next page arrow