css - Firefox bug with outline-offset or? -

When you hover over a box, you will see that the left side outlines some delays, while the other 3 The sides drag photos easily at the same time. Do you think people are worth filing a bug? I'm on Win7 machine and I tested the latest stable FF. Are you also looking at this?

Demo

CSS

  body {margin} : 0; } # Box {width: 100px; Height: 100 pixels; Padding: 20px; Limit: 20px solid green; Outline: Navy Solid 20px; Margins: 100px; Background color: red; Background-image: url (http://www.lorempixel.com/50/50); Repeat Background: No Repetition; Background-clip: content box; Background-origin: content-box; Background-position: center; Range radius: 20px; -moz-frame-radius: 40px; Outline Offset: 20px; Transition: all 1.5 seconds easily; } # Box: Hover {Outline-Offset: 0; }