[Spike] reproduce modal close issue

[shleewhite]

📌 Summary

This came up when @pkj-web was using Helios for his project. We noticed that when the Modal wasn't within one of the yielded AppFrame components, it would work but scroll isn't properly restored when it closes. The fix is to either put it within a yielded component (like AF.Main) or to move it outside the AppFrame entirely.

Not sure this is a bug or not and if this is something we should address (I can't think of a time when the Modal would be used in this way in a consumer's app), but thought I would make a reproduction so we can discuss.

To reproduce the issue:

• Go to: https://hds-showcase-git-spike-modal-app-frame-hashicorp.vercel.app/layouts/app-frame/frameless/demo-full-app-frame-with-functional-modal
• Close the modal
• Notice you cant scroll the page

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Project	Deployment	Actions	Updated (UTC)
hds-showcase	Ready	Preview	Jul 2, 2026 3:35pm
hds-website	Ready	Preview	Jul 2, 2026 3:35pm

[didoo]

@shleewhite probably a bug, I see a spurious inline overflow: hidden style still applied to the body element even after the modal has been closed.