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Prevent iOS Alert and Modal from rendering in the top-left corner #57251

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Prevent iOS Alert and Modal from rendering in the top-left corner #57251

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f7451e7
fix: prevent iOS Alert from rendering in the top-left corner
zoontek Jun 17, 2026
b36b0b0
fix: prevent iOS Modal from rendering in the top-left corner
zoontek Jun 17, 2026
bdd45e4
Prevent RCTScreenSize from caching a zero screen size
zoontek Jun 23, 2026
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6 changes: 3 additions & 3 deletions packages/react-native/React/Base/RCTUtils.mm
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Original file line number Diff line number Diff line change
Expand Up @@ -384,13 +384,13 @@ UIDeviceOrientation RCTDeviceOrientation(void)
CGSize RCTScreenSize(void)
{
static CGSize portraitSize;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{

if (CGSizeEqualToSize(portraitSize, CGSizeZero)) {
RCTUnsafeExecuteOnMainQueueSync(^{
CGSize screenSize = [UIScreen mainScreen].bounds.size;
portraitSize = CGSizeMake(MIN(screenSize.width, screenSize.height), MAX(screenSize.width, screenSize.height));
});
});
}

#if !TARGET_OS_TV
if (UIDeviceOrientationIsLandscape(RCTDeviceOrientation())) {
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1 change: 1 addition & 0 deletions packages/react-native/React/CoreModules/RCTAlertController.mm
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Expand Up @@ -23,6 +23,7 @@ - (UIWindow *)alertWindow
UIWindowScene *scene = RCTKeyWindow().windowScene;
if (scene != nil) {
_alertWindow = [[UIWindow alloc] initWithWindowScene:scene];
_alertWindow.frame = scene.coordinateSpace.bounds;
} else {
_alertWindow = [[UIWindow alloc] initWithFrame:UIScreen.mainScreen.bounds];
}
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