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Did you add them to favorites very fast after switching pages? It could be that the metadata didn't have time to update before you did so. Let me take a look.

Edit : Indeed that was the issue, fixed it already and will be shipped in the next version

Might be that. After removing the sites from favorites and adding them again, it corrected the icons.

Thank you for your feedback. We will let our team know about it, but that would probably depend on each website's favicon and not Keychain.