Versions.aspx no longer renders (blank/white page) for Lists in new experience – possible deprecation or behavior change

Target SharePoint environment

SharePoint Online

What SharePoint development model, framework, SDK or API is this about?

💥 SharePoint Framework

Developer environment

None

What browser(s) / client(s) have you tested

• 💥 Internet Explorer
• 💥 Microsoft Edge
• 💥 Google Chrome
• 💥 FireFox
• 💥 Safari
• mobile (iOS/iPadOS)
• mobile (Android)
• not applicable
• other (enter in the "Additional environment details" area below)

Additional environment details

• SPFx version 1.22.2
• Node.js version 22.22.2

Describe the bug / error

We are experiencing an issue where the SharePoint Versions.aspx page no longer behaves as expected. Previously, it was possible to open the version history dialog via a direct URL, but now the page only returns a blank (white) content.

Example URL:
https://<tenant>.sharepoint.com/sites/<site-collection>/_layouts/15/Versions.aspx?FileName=/sites/<site-collection>/Lists/<list-name>/<item-id>&IsDlg=1&list={<list-guid>}

Observed Behavior
The page loads but displays no content (white/empty screen).
No obvious error message is shown in the UI and console.
This used to render the version history dialog correctly.

Context / Findings
It appears that SharePoint has introduced a new version of the version history dialog.
The previous _layouts/15/Versions.aspx endpoint may no longer be supported or may have changed behavior.

Questions / Clarification Needed

• Is this a known change (bug vs. intentional deprecation)?
• Is there any official documentation indicating that Versions.aspx should not be used directly or will be removed?

If this is no safe way to handle such use-cases:

• What is the recommended way to open/display version history in SPFx solutions (=the exact same dialog with all features)? Is there a supported API or component that allows replicating the native SharePoint version history experience without reimplementing it from scratch?

Steps to reproduce

1. Create a SPFx WebPart
2. Implement an IFrame with an Version-History URL (Format: https://<tenant>.sharepoint.com/sites/<site-collection>/_layouts/15/Versions.aspx?FileName=/sites/<site-collection>/Lists/<list-name>/<item-id>&IsDlg=1&list={<list-guid>})
3. Be sure, that the referenced List has new experience where the default SharePoint Version-History opens in the new UI behaviour with Fluent UI components

Expected behavior

The version history dialog should render as before, showing all versions of the selected list item/document. Or an other, official supported solution how to reuse the SharePoint Version History Dialog.