Layout Slider Doesn’t Display correctly

This layout slider isn’t displaying properly, seems like on of the inner elements is being set with a height that is too small. If I resize the window it’ll correct itself but will be incorrect when the page is first loaded, usually 50% of the time. Works sometimes doesn’t work other times. Here’s how it looks when it’s wrong
And this is how it looks after I resize the window and it corrects itself.

Here’s the public URL