Hi all.
I have tried using UIDesignRequiresCompatibility YES & NO for an application.
Running on iOS 26 BETA 5 makes no difference to the UI. Running on Simulator MacOSS 26 BETA 5 makes no difference to the UI.
Anyone had luck with this info plist setting?
It works as expected in my environment. You should check spelling and type. It should be "UIDesignRequiresCompatibility" and "boolean".
Just to add something I see folks run into on occasion, beware of leading or trailing whitespace characters too. In other words, make sure you didn't define the key with a name like <space>UIDesignRequiresCompatibility or similarly on the end.
— Ed Ford, DTS Engineer