Share profile image generation is broken for some avatars and cover images

Issue Summary

When we try to get a social profile image in "Network -> Preferences -> Share your profile" screen, sometimes generated image is missing avatar or cover image or both.

I think it's a CORS issue:

Steps to Reproduce

1. Go to "Network -> Preferences -> Share your profile".
2. Press "Copy Image". Wait for success toast message.
3. Paste the generated on somewhere to see the result.

Here is what I see on Ghost Admin:

And here is the result when I copy image:

For the reference, here is the url of my cover image:

Ghost Version

6.0.0

Node.js Version

22

How did you install Ghost?

Synaps Media

Database type

MySQL 8

Browser & OS version

Chrome 138 / MacOS Tahoe

Relevant log / error output

Code of Conduct

• I agree to be friendly and polite to people in this repository