Created attachment 584189 [details]
It seems that the way border-image works just changed. Khuey suggested that adding border-style: solid to everything would fix things, because it doesn't look like breadcrumbs are using border-width overrides.
Created attachment 584192 [details] [diff] [review]
*** Bug 713490 has been marked as a duplicate of this bug. ***
*** Bug 714622 has been marked as a duplicate of this bug. ***