GeezerVison

Platforms Impacted

• iOS
• visionOS
• macOS

Description of changes

In iOS 26, the containingStackView (which manages the title and subtitle) was expanding to fill the entire available space to the right of the back button, causing the text to be centered within this oversized container rather than within the navigation bar itself. This resulted in visually off-center navigation titles. This fix calculates the minimum space required by the containingStackView to properly display all its content, allowing the navigation controller to center the appropriately-sized container within the navigation bar for proper title alignment.

Verification

iPhone 16 Pro with iOS 26 and iOS 18 (no affect on iOS 18)
iPad iOS 16

Visual Verification

Before	After

Pull request checklist

This PR has considered:

• Light and Dark appearances
• iOS supported versions (all major versions greater than or equal current target deployment version)
• VoiceOver and Keyboard Accessibility
• Internationalization and Right to Left layouts
• Different resolutions (1x, 2x, 3x)
• Size classes and window sizes (iPhone vs iPad, notched devices, multitasking, different window sizes, etc)
• iPad Pointer interaction
• SwiftUI consumption (validation or new demo scenarios needed)
• Objective-C exposure (provide it only if needed)

Microsoft Reviewers: Open in CodeFlow