1422207 - Nested inline-flex interferes with 'text-decoration: underline'

Status: RESOLVED DUPLICATE of bug 1344545

(Core :: Layout, defect)

Description

[Luke]

User Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:58.0) Gecko/20100101 Firefox/58.0
Build ID: 20171127221115

Steps to reproduce:

Checked the link that's set to underline on http://www.sopacameraclub.com/


Actual results:

You can see the "SOPA Newsletter" is not underlined as in other browsers.
Looking in inspector you can see that <a> has underline, but the span within has Browser style text-decoration: none for some reason, if you check show-browser-styles on the span.


Expected results:

It should underline naturally and inherit underlining as in Chromium.

Unless something changed it shouldn't have that style if I'm reading this correctly:
https://hg.mozilla.org/mozilla-central/file/tip/layout/style/res/html.css

Comment 1

[Gérard Talbot]

Luke,

I confirm your finding. The "SOPA Newsletter" is not underlined in Firefox 52.5 ESR. I have underlining links checkbox checked in about:preferences#content .
The "SOPA Newsletter" is underlined in Chromium 62.0.3202.89. 

Are you the web author of that sopacameraclub.com site?

Can you create a reduced test out of that webpage?

Gérard

Comment 2

[Gérard Talbot]

Okay <...deep breath...> . After 2-3 hours of careful removal/weeding out code, I finally was able to create 2 reduced tests out of the www.sopacameraclub.com webpage:

http://www.gtalbot.org/BugzillaSection/Bug1422207-nested-inline-flex-interferes-underline-001.html

http://www.gtalbot.org/BugzillaSection/Bug1422207-nested-inline-flex-interferes-underline-002.html

Firefox 52.5 ESR does *_not_* underline "SOPA Newsletter SOPA Newsletter" in both tests.

Chromium 62.0.3202.89 underlines "SOPA Newsletter SOPA Newsletter" in both tests.

First, I can not say if this is a CSS specification violation: I have no specific or relevant knowledge of 'display: inline-flex'.

Second, I have not searched for a duplicate, that is if, to begin with, Firefox 52+ is violating the CSS spec in the first place.

For now, I am rewording the bug summary accordingly.

Comment 3

[Gérard Talbot]

According to Daniel Holbert commenting in bug 1344545 comment 1, Firefox is matching the spec and Chrome is not.

Therefore, I think we should resolve this bug as a DUPLICATE of bug 1344545 .

Comment 4

[Gérard Talbot]

The steps given in bug 1344545 are exactly what my 002 test is doing. So I am resolving this bug as a DUPLICATE of bug 1344545.