Bug 156744 – text-shadow inside background-size cover shows extra shadow artifact

• Status: RESOLVED
• Resolution: CONFIGURATION CHANGED
• Component: CSS

[Mike Griffith]

Created attachment 276723 [details]
Screenshot showing extra shadow artifact

The following CSS rules cause an additional shadow to be applied around a box that is not accounted for by any of the elements.

  <div style="padding:100px 0;
              background-image:url(//cdn2.hubspot.net/hubfs/484866/Headers/BoxCast_Fun_1-01.jpg?t=1461010690724);
              background-size:cover;">
    
    <h1 style="font-weight:100;
               color:#fff;
               font-size:60px;
               text-shadow:0 0 10px rgba(0,0,0,0.5);">Meet the Team</h1>
  </div>

Runnable example: https://output.jsbin.com/govopuzape

NOTE: I cannot reproduce this inside the iOS simulator; it only appears on a physical device (iPhone 6 / iOS 9.3).

[zalan]

Created attachment 277001 [details]
Test reduction

[zalan]

When either the text (size position) or the text-shadow change, the artifact changes too. Also it can be clipped out with overflow hidden.

[Brent Fulgham]

This does not happen in Safari 15.5+.