I have a repro thanks to github.com/ilyakava! Looks like installing the Buffer chrome extension can expose this bug. https://github.com/artsy/scroll-frame/issues/11 Probably something weird I'm doing with pushState.
Ahh, thanks for report. Looks like I have a little way to go to ensure cross-modern-browser support. I noticed some odd things going on in Firefox. What browser/version are you using?
Clicking on one of the kittens gives me a blank page, and then clicking back brings up the list again but it has the "Loading..." overlay indefinitely.
This experience definitely didn't sway my opinion that infinite scrolling is really annoying.