fullScreenCover & Sheet modifier lifecycles

Hello everyone,

I’m running into an issue where a partial sheet repeatedly presents and dismisses in a loop.

Setup

• The main screen is presented using fullScreenCover
• From that screen, a button triggers a standard partial-height sheet
• The sheet is presented using .sheet(item:)

Expected Behavior

• Tapping the button should present the sheet once and allow it to be dismissed normally.

Actual Behavior

• After the sheet is triggered, it continuously presents and dismisses.

What I’ve Verified

• The bound item is not being reassigned in either the parent or the presented view
• There is no .task, .onAppear, or .onChange that sets the item again
• The loop appears to happen without any explicit state updates

Additional Context

• I encountered a very similar issue when iOS 26.0 was first released
  • At that time, moving the .sheet modifier to a higher parent level resolved the issue
• The problem has now returned on iOS 26.4 beta
• I’m currently unable to reproduce this in a minimal sample project, which makes it unclear whether:
  • this is a framework regression, or
  • I’m missing a new presentation requirement

Environment

• iOS: 26.4 beta
• Xcode: 26.4 beta

I’ve attached a screen recording of the behavior.

Has anyone else experienced this with a fullScreenCover → sheet flow on iOS 26.4?

Any guidance or confirmation would be greatly appreciated.

Thank you!