Series not showing images below

[jjamess10]

When I open up a case on Horos it normally displays the series of images down the side on the left.
Unfortunately when I have done this on my second computer it shows up with the series but doesn't show the images below. 

Here is how it looks. Normally it would display the series images below.
Is there a setting or shortcut I am missing?
Additionally, the Mac that shows the images as expected and the one not showing them are on the same version of Horos.

[Howard Mann]

Hi,

See the attached image.

Howard

[jjamess10]

Hello Howard,

Clicking that button just hides the series images.
I'm trying to get those 6 images in the series to expand downwards below.