WordPress 4.8.2
Theme x 5.2.2 with a child theme
Cornerstone 2.1.3
avfx.live
I have individual portfolio category pages and they work fine. They show the portfolio items for the correct category and they show all on one page. You can see these at: /corporate-event-portfolio/, /special-event-portfolio/, /trade-show-portfolio/, /av-integration-portfolio/
I have a portfolio page http://avfx.live/portfolio/ with the portfolio page template. It shows All, AV Integration, Corporate Events, Special events, trade shows as my category filters. I selected all in the page settings to get this. I selected 24 portfolio items per page. However, when I select AV Integration only 9 portfolio images are shown on the page (There are 15 AV Integration portfolio images) and pagination is shown at the bottom of the page. If I select the 2 from the bottom pagination it shows me a page with portfolio images from categories other than AV Integration. I have the same issue with the other categories as well.
AV Integration has 15 portfolio images , Corporate Events has 12 portfolio images, Special events has 21 portfolio images, trade shows has 16 portfolio images so they all should be displayed on a single page, because I have the page number to display to 24, yet they all show the pagination at the bottom and when you select a page from the pagination it looses the category.