I was trying to work out how to do something on iPadOS 15 the other day and could not find the menu option that the Internet told me I needed to use. Eventually it occurred to me to try touching the screen between the menu options I could see and moving my finger. The menu scrolled and the option I wanted appeared. There was no visual indication at all that there were more menu options than those I was initially presented. Things change between different OS versions so my initial thought was that I looking at instructions that had been written for an older version of iPadOS or iOS and they didn't work for iPadOS 15. I've been using an iPad for years and still I was confused by this terrible UI/UX.