1062621 - Pseudo :first-line doesn't work properly when added after the element is already rendered

Status: RESOLVED DUPLICATE of bug 145419

(Core :: CSS Parsing and Computation, defect)

Description

[Evan Washkow]

Attachment: first-line bug.PNG

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/37.0.2062.102 Safari/537.36

Steps to reproduce:

1) Go to http://benhowdle.im/cssselectors/
2) Select "first-line" (left-hand menu)


Actual results:

The first line of <p> tags don't change to green.

As you can see in the attached screenshot, Firebox (in Firefox) is showing that the green *should* be applying, however, it's not.


Expected results:

The first line of <p> tags should change to green.

There's a way to force Firefox to color the first line green:
1) Add an element style to the <p> tag
2) Change the <p> to display: block -- notice that this does *not* fix the issue
3) Change the <p> to display: inline-block -- this fixes the issue (the first line is now green)
4) Change the <p> back to display: block -- the first line remains green.

Comment 1

[:Gijs (he/him)]

This is also broken on Nightly. Not sure if this is css computation or layout (esp. considering switching display: about fixes things), but leaving this here for now.