Bug 266901 – UA Stylesheet adds '1px' border top width for 'iframe' in fullscreen WPT test case

• Status: RESOLVED
• Resolution: DUPLICATE
• Component: CSS

[Ahmad Saleem]

Hi Team,

While looking into browser specific failures, I noticed that we are failing following Test Case:

WPT Test Case: https://wpt.fyi/results/fullscreen/rendering/ua-style-iframe.html?label=master&label=experimental&aligned&q=fullscreen

WPT Test Live Link: http://wpt.live/fullscreen/rendering/ua-style-iframe.html

It fails in Safari (even WebKit ToT) with following:

> assert_equals("1px", "0px", "fullscreen borderTopWidth style")

I looked into 'fullscreen.css' and we have 'border: none' with !important as well. Similarly, I looked into presentational hints in 'HTMLIframeElement.cpp' and we don't have 1 px (like we had for HR in the past).

I even tried to look into 'html.css' but couldn't find '1 px'. So I am just raising so we can track and fix this issue.

Thanks!

[Tim Nguyen (:ntim)]

This seems more like a timing issue, WebKit might be updating styles later than the test expects, but the border-width is correct when you're in fullscreen.

[Radar WebKit Bug Importer]

<rdar://problem/120386877>

[Ahmad Saleem]

Fixed via - https://github.com/WebKit/WebKit/commit/cba51d14a79420eea435792f37f3e379bc523bb9#diff-1fd83580913d21fb150911a2a25d0b001c80556841e7cd098cdf46a008de4824

*** This bug has been marked as a duplicate of bug 249069 ***