EduPress doesn’t highlight tab under slideshow

While the EduPress slideshow works perfectly for laptops and desktops, I’m finding one small glitch in the display of the tabs under the slideshow. On an iPhone in portrait mode (or on a larger screen where you narrow down the browser window until the responsive menu icon appears) as it rotates through the slides it highlights the tab of the slide that is displayed. However, I notice that when it gets to the 2nd slide the highlighting is not done (the first tab remains highlighted.) When it gets to the 3rd (or 4th) slide highlighting reappears. It manifests the same issue on the sample EduPress page.

I love EduPress – hope you got my donation. ??

Don

The page I need help with: [log in to see the link]