Bug 215531

Summary:	background-size: cover is wrong for abnormally large/thin SVG images
Product:	WebKit	Reporter:	Dean Jackson <dino>
Component:	CSS	Assignee:	Nobody <webkit-unassigned>
Status:	NEW ---
Severity:	Normal	CC:	webkit-bug-importer
Priority:	P2	Keywords:	InRadar
Version:	WebKit Nightly Build
Hardware:	Unspecified
OS:	Unspecified
See Also:	https://bugs.webkit.org/show_bug.cgi?id=206753

Description Dean Jackson 2020-08-14 18:36:13 PDT

See the results of the following tests:

  imported/w3c/web-platform-tests/css/css-backgrounds/background-size/vector/tall--contain--height.html [ ImageOnlyFailure ]
  imported/w3c/web-platform-tests/css/css-backgrounds/background-size/vector/tall--contain--width.html [ ImageOnlyFailure ]
  imported/w3c/web-platform-tests/css/css-backgrounds/background-size/vector/wide--contain--height.html [ ImageOnlyFailure ]
  imported/w3c/web-platform-tests/css/css-backgrounds/background-size/vector/wide--contain--width.html [ ImageOnlyFailure ]

They reference a background-image that is SVG with only one dimension, but with correct (if weird) proportions.
According to CSS, their intrinsic size should be scaled down to provide the other dimension. We're not doing that.

Comment 1 Radar WebKit Bug Importer 2020-08-14 18:36:36 PDT

<rdar://problem/67112504>

Comment 2 Dean Jackson 2020-08-14 18:47:58 PDT

See also webkit.org/b/206753