I actually got it to work using DivIcons, but I felt it was kind of hacky (it was a div containing an image with a url to my marker).

Interestingly enough, the bug I was getting (can't seem to repro anymore) was already solved... by you! https://github.com/Leaflet/Leaflet/issues/766#issuecomment-7...

None of the fixes on that page worked, but using DivIcons did. If I can repro, I will definitely make an issue. Thanks!