iPadOS 16 introduced Display Zoom, which increases the working resolution of the iPad on supported models (M-class SoCs), greatly reducing the size of the UI elements which ultimately provides a lot more screen real estate.
https://appletoolbox.com/how-to-enable-display-zoom-on-ipados-16/
Sadly, while RetroArch's UI does respect the new resolution, the onscreen inputs from overlays and tap points are now misaligned from the actual on-screen elements as they ignore the new working resolution. This means users must tap "ghost" elements.
Here is a visual look at what's occurring. The red outlines mark the actual tap points from the overlay. This also applies to touch controls:

iPadOS 16 introduced Display Zoom, which increases the working resolution of the iPad on supported models (M-class SoCs), greatly reducing the size of the UI elements which ultimately provides a lot more screen real estate.
https://appletoolbox.com/how-to-enable-display-zoom-on-ipados-16/
Sadly, while RetroArch's UI does respect the new resolution, the onscreen inputs from overlays and tap points are now misaligned from the actual on-screen elements as they ignore the new working resolution. This means users must tap "ghost" elements.
Here is a visual look at what's occurring. The red outlines mark the actual tap points from the overlay. This also applies to touch controls: