In the console I see the following error:

GalleryCarousel.js Uncaught ReferenceError: Hammer is not defined

The issue was first reported specifically for Actions, where apparently all Gallery styles don't show (see Slack thread here) but on my local I was only able to reproduce with the Slider style

Notes:

• on local I have the same issue with the CarouselHeader block too, which makes sense since it uses Hammer as well
• on local I could reproduce the issue both in Pages and in Actions, but it seems on other sites it's only a problem for Actions