Although I realise a website bug is annoying, Victor isn't looking at it (it's his code) and I'm not sure it's worth my time to start trying to figure it out, if it's just an occasional hotlap that appears duplicated.
Unless it's more of a problem than I know?
On the other hand, if there is a known way to reproduce this then I could fix it. It's just really hard trying to debug something that happens very rarely, in someone else's code, with no known way to make the bug happen.