From fd43bcc8c42961d17b65f7fe6a1f9421d47f40a8 Mon Sep 17 00:00:00 2001
From: Isaac Israel <isaac.israel@hibob.io>
Date: Wed, 13 May 2026 18:44:02 +0300
Subject: [PATCH] fix(ios): add Auto Layout constraints to RNNReactButtonView
 on iOS 26
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On iOS 26 the Liquid Glass navigation bar wraps custom-view bar button
items in several internal layout containers.  Without explicit size
constraints the wrapper views can collapse to zero height after a
pop → tab-switch → tab-switch → push cycle, making the React button
invisible.

- Guard all new logic behind @available(iOS 26.0, *) AND a runtime
  check for UIDesignRequiresCompatibility (compatibility mode disables
  Liquid Glass and uses the legacy view hierarchy)
- Set translatesAutoresizingMaskIntoConstraints = NO
- Add width/height constraints at UILayoutPriorityDefaultHigh
- Update constraints in didMountComponentsWithRootTag: after sizeToFit

Co-authored-by: Cursor <cursoragent@cursor.com>
---
 ios/RNNReactButtonView.mm | 43 +++++++++++++++++++++++++++++++++++++--
 1 file changed, 41 insertions(+), 2 deletions(-)

diff --git a/ios/RNNReactButtonView.mm b/ios/RNNReactButtonView.mm
index 607d91286bf..1da4c2735b4 100644
--- a/ios/RNNReactButtonView.mm
+++ b/ios/RNNReactButtonView.mm
@@ -1,6 +1,10 @@
 #import "RNNReactButtonView.h"
+#import <React/RCTSurface.h>
 
-@implementation RNNReactButtonView
+@implementation RNNReactButtonView {
+    NSLayoutConstraint *_widthConstraint;
+    NSLayoutConstraint *_heightConstraint;
+}
 
 - (instancetype)initWithHost:(RCTHost *)host
                   moduleName:(NSString *)moduleName
@@ -10,15 +14,50 @@ - (instancetype)initWithHost:(RCTHost *)host
          reactViewReadyBlock:(RNNReactViewReadyCompletionBlock)reactViewReadyBlock {
     self = [super initWithHost:host moduleName:moduleName initialProperties:initialProperties eventEmitter:eventEmitter sizeMeasureMode:convertToSurfaceSizeMeasureMode(RCTRootViewSizeFlexibilityWidthAndHeight) reactViewReadyBlock:reactViewReadyBlock];
     [host.surfacePresenter addObserver:self];
-    self.backgroundColor = UIColor.clearColor;
+    self.backgroundColor = [UIColor clearColor];
+
+    if (@available(iOS 26.0, *)) {
+        if (![self designRequiresCompatibility]) {
+            self.translatesAutoresizingMaskIntoConstraints = NO;
+            _widthConstraint = [self.widthAnchor constraintEqualToConstant:0];
+            _heightConstraint = [self.heightAnchor constraintEqualToConstant:0];
+            _widthConstraint.priority = UILayoutPriorityDefaultHigh;
+            _heightConstraint.priority = UILayoutPriorityDefaultHigh;
+            _widthConstraint.active = YES;
+            _heightConstraint.active = YES;
+        }
+    }
 
     return self;
 }
 
+- (BOOL)designRequiresCompatibility {
+    static BOOL checked = NO;
+    static BOOL result = NO;
+    if (!checked) {
+        checked = YES;
+        result = [[[NSBundle mainBundle] objectForInfoDictionaryKey:@"UIDesignRequiresCompatibility"] boolValue];
+    }
+    return result;
+}
+
 - (void)didMountComponentsWithRootTag:(NSInteger)rootTag {
     if (self.surface.rootTag == rootTag) {
         [super didMountComponentsWithRootTag:rootTag];
         [self sizeToFit];
+        if (@available(iOS 26.0, *)) {
+            if (![self designRequiresCompatibility]) {
+                [self updateConstraintsToFitSize];
+            }
+        }
+    }
+}
+
+- (void)updateConstraintsToFitSize {
+    CGSize size = self.frame.size;
+    if (size.width > 0 && size.height > 0) {
+        _widthConstraint.constant = size.width;
+        _heightConstraint.constant = size.height;
     }
 }