I’ve posted a ticket for this on the Tracker here: Disable Scroll/Scroll views not working | Voters | AppGyver
If you’re using floating custom headers/footers or other functions that involve scrolls views set to 100% height/width and disabling page scrolling for the Page Layout, this may be a problem for you too. Do check your apps in the Previews and consider upvoting the Tracker ticket if it’s an issue. Every page on our web app is currently scrolling as though there were no scroll views, causing our headers to scroll out of sight when they should be scrolling with the page.
As of this writing, it’s Saturday afternoon, so I don’t expect this to be looked at by the AG team until at least Monday.