Must our iPad support resizing on an iPad if it supports Duo?

We have built our existing app with Xcode 27.1 and when running it on iPad it does not resize - it seems to run in iPhone mode as usual, in a fixed portrait mode.

However the same build will resize to a wider aspect ratio in iPhone mirroring (and on Duo, obviously)

But, the app when built with Xcode 27 does resize on an iPad.

So is the 27.1 iPad behaviour expected or is this just something temporary in the 27.1 beta?

I think 27.1 is not meant for other devices - My app crashes the simulator if I try to select "new window" from from my multitasking iPad app. (Posted my multitasking issues here. Can't figure out how to get a post to show up in the Q/A)

We have built our existing app with Xcode 27.1 and when running it on iPad it does not resize

Can you provide more details about your app? Does your app only support the iPhone idiom? Do you happen to have the UIRequiresFullScreen key in your Info.plist?

We don't have UIRequiresFullScreen but we do have Targeted Device Families = iPhone

But then why do we get different behaviour in Xcode 27 builds compared to 27.1 builds?

Also, is UIRequiresFullScreen then the correct way to opt out of iPad resizing (and is this a temporary thing?). Although we'd want to support iPad too once we support Duo, it would be helpful if we could do that in a follow on release, in terms of testing effort.

Must our iPad support resizing on an iPad if it supports Duo?
 
 
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