Disable interactions on minimal required subroot

Author: kmichalikk

ios/RNSScreen.h

@@ -7,6 +7,7 @@
 #import "RNSScreenContentWrapper.h"
 #import "RNSScrollEdgeEffectApplicator.h"
 #import "RNSScrollViewBehaviorOverriding.h"
+#import "RNSViewInteractionManager.h";
 
 #if !TARGET_OS_TV
 #import "RNSOrientationProviding.h"
@@ -155,6 +156,8 @@ namespace react = facebook::react;
 - (void)notifyDismissedWithCount:(int)dismissCount;
 - (instancetype)initWithFrame:(CGRect)frame;
 
++ (RNSViewInteractionManager *)viewInteractionManagerInstance;
+
 /**
  * Tell `Screen` that it will be unmounted in next transaction.
  * The component needs this so that we can later decide whether to

ios/RNSScreen.mm

@@ -144,6 +144,17 @@ - (void)initCommonProps
 #endif // RCT_NEW_ARCH_ENABLED
 }
 
++ (RNSViewInteractionManager *)viewInteractionManagerInstance
+{
+  static RNSViewInteractionManager *manager = nil;
+  static dispatch_once_t onceToken;
+  dispatch_once(&onceToken, ^{
+    manager = [[RNSViewInteractionManager alloc] init];
+  });
+
+  return manager;
+}
+
 - (BOOL)getFullScreenSwipeShadowEnabled
 {
   if (@available(iOS 26, *)) {
@@ -795,15 +806,15 @@ - (void)willMoveToWindow:(UIWindow *)newWindow
     // Furthermore, a stack put inside a modal will exist in an entirely different hierarchy
     // To be sure, we block interactions on the whole window.
     // Note that newWindows is nil when moving from instead of moving to, and Obj-C handles nil correctly
-    newWindow.userInteractionEnabled = false;
+    [RNSScreenView.viewInteractionManagerInstance disableInteractionsForSubtreeWith:self];
   }
 }
 
 - (void)presentationControllerWillDismiss:(UIPresentationController *)presentationController
 {
   if (@available(iOS 26, *)) {
     // Disable interactions to disallow multiple modals dismissed at once; see willMoveToWindow
-    presentationController.containerView.window.userInteractionEnabled = false;
+    [RNSScreenView.viewInteractionManagerInstance disableInteractionsForSubtreeWith:self];
   }
 
 #if !RCT_NEW_ARCH_ENABLED
@@ -834,7 +845,7 @@ - (void)presentationControllerDidAttemptToDismiss:(UIPresentationController *)pr
 {
   if (@available(iOS 26, *)) {
     // Reenable interactions; see presentationControllerWillDismiss
-    presentationController.containerView.window.userInteractionEnabled = true;
+    [RNSScreenView.viewInteractionManagerInstance enableInteractionsForLastSubtree];
   }
 
   // NOTE(kkafar): We should consider depracating the use of gesture cancel here & align
@@ -850,7 +861,7 @@ - (void)presentationControllerDidDismiss:(UIPresentationController *)presentatio
   if (@available(iOS 26, *)) {
     // Reenable interactions; see presentationControllerWillDismiss
     // Dismissed screen doesn't hold a reference to window, but presentingViewController.view does
-    presentationController.presentingViewController.view.window.userInteractionEnabled = true;
+    [RNSScreenView.viewInteractionManagerInstance enableInteractionsForLastSubtree];
   }
 
   if ([_reactSuperview respondsToSelector:@selector(presentationControllerDidDismiss:)]) {
@@ -1654,7 +1665,7 @@ - (void)viewDidAppear:(BOOL)animated
 {
   if (@available(iOS 26, *)) {
     // Reenable interactions, see willMoveToWindow
-    self.view.window.userInteractionEnabled = true;
+    [RNSScreenView.viewInteractionManagerInstance enableInteractionsForLastSubtree];
   }
   [super viewDidAppear:animated];
   if (!_isSwiping || _shouldNotify) {
@@ -1696,6 +1707,10 @@ - (void)viewDidDisappear:(BOOL)animated
 #else
   [self traverseForScrollView:self.screenView];
 #endif
+  if (@available(iOS 26, *)) {
+    // Reenable interactions, see willMoveToWindow
+    [RNSScreenView.viewInteractionManagerInstance enableInteractionsForLastSubtree];
+  }
 }
 
 - (void)viewDidLayoutSubviews

ios/RNSScreenStack.mm

@@ -412,6 +412,12 @@ - (void)didMoveToWindow
     [self maybeAddToParentAndUpdateContainer];
   }
 #endif
+  if (self.window == nil) {
+    // When hot reload happens that would remove the whole stack, disabling the interaction on a screen out transition
+    // will not be matched with enabling the interactions on another screen's in transition. We need to make sure
+    // that the subtree is interactive again
+    [RNSScreenView.viewInteractionManagerInstance enableInteractionsForLastSubtree];
+  }
 }
 
 - (void)maybeAddToParentAndUpdateContainer

ios/helpers/RNSViewInteractionManager.h

@@ -0,0 +1,11 @@
+#pragma once
+
+@interface RNSViewInteractionManager : NSObject
+
+- (instancetype)init;
+
+- (void)disableInteractionsForSubtreeWith:(UIView *)view;
+
+- (void)enableInteractionsForLastSubtree;
+
+@end

ios/helpers/RNSViewInteractionManager.mm

@@ -0,0 +1,40 @@
+#import "RNSViewInteractionManager.h"
+#import "RNSBottomTabsScreenComponentView.h"
+
+@implementation RNSViewInteractionManager {
+  __weak UIView *lastRootWithInteractionsDisabled;
+}
+
+- (instancetype)init
+{
+  lastRootWithInteractionsDisabled = nil;
+  return self;
+}
+
+- (void)disableInteractionsForSubtreeWith:(UIView *)view
+{
+  UIView *parent = view.superview;
+  while (parent && ![parent isKindOfClass:UIWindow.class] &&
+         ![parent isKindOfClass:RNSBottomTabsScreenComponentView.class]) {
+    parent = parent.superview;
+  }
+
+  if (parent) {
+    if (lastRootWithInteractionsDisabled && lastRootWithInteractionsDisabled != parent) {
+      lastRootWithInteractionsDisabled.userInteractionEnabled = YES;
+    }
+
+    parent.userInteractionEnabled = NO;
+    lastRootWithInteractionsDisabled = parent;
+  }
+}
+
+- (void)enableInteractionsForLastSubtree
+{
+  if (lastRootWithInteractionsDisabled) {
+    lastRootWithInteractionsDisabled.userInteractionEnabled = YES;
+    lastRootWithInteractionsDisabled = nil;
+  }
+}
+
+@end