I'm not aware of an issue with horizontal scroll not working in v19. Horizontal scrollable frames work fine for me. Have you tried editing the settings in the Overlay Creator panel? Have you tried creating a new one from scratch?
Select the frame and open the scrollable content overlay and reset the choices there.
Thanks, Bob. I've actually tried that, to no avail. It works perfectly in my desktop viewer, but when I view it in our viewer (built with viewer builder), the content of the frame disappears.
Sometimes - and I haven't nailed down which isolated function makes this happen - the scroll bars will appear, as if the container frame knows it should be scrolling something, but the contents are gone.
Original content was images, text and buttons. But I've stripped it down to the bare minimum -- one large image, no interactivity, and still no luck. Have you heard of others with this problem, or is it a user-error somehow?
(above answer from jzporath pertains to original post, sorry for confusion).
the frame -the whole page- has been rebuilt, but I'll try that again. Thanks