I contacted lastpass support, as we got no response here.
The case is under review by their developers now:
Thank you for your reply.
I got a response from our developers, so they said that it's been put under review and they have created a ticket in which they will be working on adding more authenticators. I'm attaching this ticket to your case so once it's resolved or developed we will let you know.
We appreciate your patience.
Support Specialist Tier 1
So apparently my lastpass decided to suddenly auto-handle 'basic auth' requests today in Chrome. I guess the extension auto-updated... and this has totally borked me because it's trying to send the wrong user/pass!!!!
I was losing my mind wondering why I was just getting a http error of too many tries, then when I looked at my logs I saw that I was sending the wrong username dozens of times, even though I never got a popup in my browser.
After doing some diagnosing I traced it to lastpass causing the issue! WTF, first they don't have it handling basic auth popups for years, now they want to autofill with a randomly chosen account from the domain.
I can't find any way to disable this, even if I disable auto-fill it still does it. This is totally unacceptable and a major PITA... Either auto-fill the pop-up box, or do don't anything at all!!!!