Auto-tiling, usability improvements & lots more.
The new IpadOS is not identify by Platform Info (neither as IOS neither as mobile)
AFAIK the desktop-grade iPad OS browsing tells websites it is a desktop macOS system to get them to provide the desktop-grade website. I'm not sure there's a good way around that, or that the Platform Info object should indicate something different to what the browser says.
If you think it's an issue then put in a bug here:
github.com/Scirra/Construct-3-bugs