Created attachment 195917 [details] test case According to CSS Backgrounds and Borders Module Level 3... >Name: border-image >Value: <‘border-image-source’> || <‘border-image-slice’> [ / <‘border-image-width’> | / <‘border-image-width’>? / <‘border-image-outset’> ]? || <‘border-image-repeat’> On Windows 7 Home Premium SP1 64bit, Firefox Nightly 22.0a1(buildID 20130331030859) corresponds to this. But Chromium 28.0.1459.0 (191581) doesn't accept "1 / / 1" syntax in border-image property.
This continues to be an issue in Safari 15.
<rdar://problem/96973804>