Hi,
We made several additional tests and couldn’t found to a conclusion yet. Just that when we disable the loop option in the options of that page it works fine but without looping the images(you have to go back).
Couldn’t replicated that situation in m Cardinal site, it works fine also with the loop option.
Later today we will send an update of Cardinal, can you try to update the theme and let us know so we can test it again.
Thanks
-Rui