Open Bug 1262974 Opened 5 years ago Updated 3 years ago

text-decoration on parent box in a vertical writing-mode with children affected by varying vertical-align values does not keep constant position

Categories

(Core :: Layout: Block and Inline, defect)

defect
Not set
normal

Tracking

()

Tracking Status
firefox48 --- affected

People

(Reporter: bugzilla, Unassigned)

References

(Blocks 1 open bug)

Details

(Keywords: testcase)

DHTML test
----------

http://www.gtalbot.org/BrowserBugsSection/CSS3TextDecoration/text-decoration-position-sample-dhtml.html

Such test is a simple text variation of the "ABCD" example from figure 6 in
https://drafts.csswg.org/css-text-decor-3/#text-underline-position-property


Expected results
----------------

There should be one and only one vertical straight, unbroken line under the baseline of the whole word "sample" in all 5 writing-modes.


Explanations
------------

The position of text decoration lines applying to a parent box must be determined in relation to the same baseline and is not affected by 'vertical-align' applied on its descendants.


Notes
-----

- This spun from bug 1220438 comment 30
- No browser currently passes this test
- I am using Firefox 48.0a1 buildID=20160406030221 and it fails the 4 vertical writing-modes
- I use Linux 3.16.0-85-generic x86_64, Qt: 4.8.6, KDE 4.14.3; Kubuntu (trusty) 14.04.4 LTS
- I've searched for duplicates and did not find any.
Blocks: writing-mode
Keywords: testcase
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