406123 - Inline absolute positioned element doesn't treated as block element

Status: RESOLVED INVALID

(Firefox :: General, defect)

Description

[FataL]

User-Agent:       Opera/9.23 (Windows NT 5.1; U; en)
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9b2pre) Gecko/2007112905 Minefield/3.0b2pre

Seems like the problem is that Firefox doesn't treat absolute positioned element as block element.

CSS 2.1: Absolute positioning: "An absolutely positioned box establishes a new containing block for normal flow children and absolutely (but not fixed) positioned descendants."

Reproducible: Always

Actual Results:  
Inline absolute positioned element treated as inline element.

Expected Results:  
Inline absolute positioned element should be treated as block element.

Opera 9 and Safari 3 do in right.

Comment 1

[FataL]

Attachment: Testcase

Comment 2

[Mats Palmgren (inactive)]

The layout in Firefox is correct.  You haven't specified 'left' for the
abs.pos. box so it will use the "static position" (roughly, where it
would be positioned had it not been styled with 'position:absolute')
http://www.w3.org/TR/CSS21/visudet.html#abs-non-replaced-width

If you want the same layout as in Opera you could add an explicit 'left:0'.

The bug really is in Opera and Safari, but the spec language is vague
in this area, saying that:
"But rather than actually calculating the dimensions of that hypothetical box, user agents are free to make a guess at its probable position."

-> INVALID