Hi,
I had the same problem and it turned out to be the settings in the admin panel. Apparently the defaults were not loaded correctly.
In particular, I had to configure these settings in “Interactivity Settings (advanced and beta)” to get the navigation working again:
Forward Arrow Click Event: click
Back Arrow Click Event: click
Navigation Click Event: click focusin
Slideshow Click Event: click
Hope this solves the issue for you as well.
Cheers!
