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.

Possible Nested NavigationSplitView regression
 
 
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