Safari: text-em-all.com login fails with extension enabled

I am able to use BitWarden to fill in login information at text-em-all.com but attempting to login thereafter produces an error (" Unexpected network error occurred. If problem persists, [contact our support team]"). Their support team advises that the BitWarden extension is the cause of this issue, and it seems they’re correct as disabling the BitWarden resolves this issue.

Safari 15.1
MacOS 11.6

A post was merged into an existing topic: Safari: simplenote.com login fails with extension enabled