There seems to be an issue regarding screen size and coordinates on iOS 26. When the AUv3 plugin is hosted, the primary display user area x and y sizes seem to be inverted (portrait instead of landscape). This does not happen in the standalone version or on iOS 18 (both standalone and hosted).
This causes ComboBox PopUpMenus to show in the wrong place.
Tested on iPhone11 and Garageband, total area is 896x414, while user area is 414x896.
For now, a (very temporary) workaround we’ve adopted is: in file juce_Windowing_ios.mm (line 731)
Display d;
d.totalArea = convertToRectInt ([s bounds]) / masterScale;
d.userArea = d.totalArea;//getRecommendedWindowBounds() / masterScale;
d.safeAreaInsets = getSafeAreaInsets (masterScale);
