In some browsers (new Chrome versions, e.g., v115), a flash of some dialog content that isn't meant to be shown can occur sometimes. It's hard to see and doesn't result in any other bugs or an inability for the user to perform actions. The content that is shown (that I've seen myself) includes the dialog text for when no credential handlers are available to match a given request.
More investigation is needed to see how easily reproducible it is.
dlongley
commented
1 year ago
In some browsers (new Chrome versions, e.g., v115), a flash of some dialog content that isn't meant to be shown can occur sometimes. It's hard to see and doesn't result in any other bugs or an inability for the user to perform actions. The content that is shown (that I've seen myself) includes the dialog text for when no credential handlers are available to match a given request.
More investigation is needed to see how easily reproducible it is.