diff --git a/Sources/OpenSwiftUI/Integration/Hosting/UIKit/View/UIHostingViewBase.swift b/Sources/OpenSwiftUI/Integration/Hosting/UIKit/View/UIHostingViewBase.swift
index 994cef5b1..19f1232cc 100644
--- a/Sources/OpenSwiftUI/Integration/Hosting/UIKit/View/UIHostingViewBase.swift
+++ b/Sources/OpenSwiftUI/Integration/Hosting/UIKit/View/UIHostingViewBase.swift
@@ -212,7 +212,7 @@ package class UIHostingViewBase {
         }
         var result = traitCollection.resolvedEnvironment(base: EnvironmentValues(environment.plist))
         result.configureForPlatform(traitCollection: traitCollection)
-        return environment
+        return result
     }
 
     package func endUpdateEnvironment(_ environment: EnvironmentValues) {
diff --git a/Tests/OpenSwiftUITests/Integration/Hosting/UIKit/View/UIHostingViewBaseTests.swift b/Tests/OpenSwiftUITests/Integration/Hosting/UIKit/View/UIHostingViewBaseTests.swift
index 3fc1a3973..4482ca33a 100644
--- a/Tests/OpenSwiftUITests/Integration/Hosting/UIKit/View/UIHostingViewBaseTests.swift
+++ b/Tests/OpenSwiftUITests/Integration/Hosting/UIKit/View/UIHostingViewBaseTests.swift
@@ -5,7 +5,7 @@
 #if os(iOS) || os(visionOS)
 import Foundation
 import Testing
-@testable import OpenSwiftUI
+import OpenSwiftUI
 @_spi(ForOpenSwiftUIOnly)
 import OpenSwiftUICore
 import UIKit
@@ -13,6 +13,26 @@ import OpenSwiftUITestsSupport
 
 @MainActor
 struct UIHostingViewBaseTests {
+    @Test
+    func startUpdateEnvironmentReturnsResolvedTraitEnvironment() {
+        let uiView = UIView()
+        let base = UIHostingViewBase(rootViewType: EmptyView.self, options: [])
+        base.uiView = uiView
+        base.traitCollectionOverride = UITraitCollection(traitsFrom: [
+            UITraitCollection(layoutDirection: .rightToLeft),
+            UITraitCollection(displayScale: 3.0),
+        ])
+
+        var inheritedEnvironment = EnvironmentValues()
+        inheritedEnvironment.layoutDirection = .leftToRight
+        inheritedEnvironment.displayScale = 1.0
+        base.inheritedEnvironment = inheritedEnvironment
+
+        let environment = base.startUpdateEnvironment()
+        #expect(environment.layoutDirection == .rightToLeft)
+        #expect(environment.displayScale == 3.0)
+    }
+
     @Test(.bug(id: "#406"))
     func uiWindowSceneDeallocIssue() async throws {
         struct ContentView: View {