I didn’t find anything there that answered my question.

The webweaver.co.nz link results in Page Not Found.

I had exactly the same experience recently, through my iPad app. Also had the countdown jumping around in another listing. Today, in the desktop site on my desktop PC, refresh at 1m, I had an auction closing, with an auto bid, winning, closing, but closing dragged on for about 7m after which I saw my auto bid had gone up to its maximum, though I had not bid any further, neither had anyone else. Fortunately it had only gone up by $1.