Suppress Add-in Install/Error Prompt Displays an Empty Task Pane w/ White Background

[gelicas]

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I tried testing this recent API change to suppress a referenced add-in prompt when a file is opened in Beta documented here https://learn.microsoft.com/en-us/office/dev/add-ins/publish/manage-trust-options?source=recommendations&utm_source=chatgpt.com#disable-trust-prompts-for-add-ins-that-arent-installed

During testing I saw that when I open a file created with the API changes the add-in install prompt does not happen however it opens a white empty task pane as seen in the screen recording.

Opening a file w/o the API change vs opening a file w/ the API change

*opened a file that has embedded an add-in in it

Your Environment

• Platform [PC desktop, Mac, iOS, Office on the web]: PC desktop
• Host [Excel, Word, PowerPoint, etc.]: Excel
• Office version number: Beta Channel Beta Channel Version 2511 Build 16.0.19330.20002
• Operating System: ______
• Browser (if using Office on the web): ______

Expected behavior

• It should suppress the add-in install prompt but not show a white empty task pane

Current behavior

Steps to reproduce

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Link to live example(s)

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Provide additional details

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Context

Useful logs

• Console errors
• Screenshots
• Test file (if only happens on a particular file)

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This issue has been automatically marked as stale because it is marked as needing author feedback but has not had any activity for 4 days. It will be closed if no further activity occurs within 3 days of this comment. Thank you for your interest in Office Add-ins!

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