Possible Nested NavigationSplitView regression

MacOS: Tahoe 26.3 Xcode: 26.3 RC1 Feedback: FB21937309

I have an app that is using nested NavigationSplitViews that was looking correct under Sequoia/Xcode 26.1

When I navigate down to the child element, the NavigationStack view has some odd leading space on it. Collapsing via the menu button properly sets the spacing to "0" as expected.

My searches came up empty. Fixes were either partially correct, or just plain didn't work.

Thank you for providing the code and screenshots. Additionally, I would like to inquire about your filed bug report, instead of submitting two Swift files, would it be possible to upload a focused and simple project to the bug report that demonstrates the issue?

That'll help us better understand what's going on. If you're not familiar with preparing a test project, take a look at Creating a test project.

Also you can share a link for that project in the forums so developers can see the issue and provide workarounds.

Albert Pascual
  Worldwide Developer Relations.

For the Feedback issue, i've attached a demo app as a follow-on message there. I do not seem able to post the bundle or .zip here.

As requested, I've posted a sanitized version to GitHub: https://github.com/mcstoufer/GUI_DEMO

@MCStoufer1 Thanks for the post, I went ahead and posted the link to your focused sample project into your bug report number. The bug is assigned to the correct team so please do keep an eye on their communication to you after they have the chance to review your project.

For more details on when you'll see updates to your report, please see What to expect after submission.

Thanks again for doing all this for us!!

Albert Pascual
  Worldwide Developer Relations.

Possible Nested NavigationSplitView regression
 
 
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