Closes #3545 (#3874)

lib/ios/RNNReactRootView.m

 #import "RNNReactRootView.h"
 #import "RCTHelpers.h"
+#import <React/RCTUIManager.h>
 
-@implementation RNNReactRootView
+@implementation RNNReactRootView {
+	RCTBridge* _bridge;
+};
 
 - (instancetype)initWithBridge:(RCTBridge *)bridge moduleName:(NSString *)moduleName initialProperties:(NSDictionary *)initialProperties {
 	self = [super initWithBridge:bridge moduleName:moduleName initialProperties:initialProperties];
 	}
 }
 
+- (void)layoutSubviews {
+	[super layoutSubviews];
+	[_bridge.uiManager setSize:self.bounds.size forView:self];
+}
+
 @end