https://github.com/wikimedia/mediawiki-skins-Vector/blob/cd44419c95c5f515865b89ce31b454c6c3e912f7/resources/skins.vector.styles/mixins.less#L79

Negation is needed. And rules for visited redlinks, if applicable?

T366515, T363911 / cd44419c95c5f515865b89ce31b454c6c3e912f7

I've noticed this a couple of times in Timeless, too, so it's not limited to Vector.

In T367982#9915003, @Mondo wrote:

I've noticed this a couple of times in Timeless, too, so it's not limited to Vector.

I can't reproduce the problem on Timeless. Can you share more details about where you see that, and a screenshot?

The problem is present in MediaWiki 1.43/wmf.11 as well. I noticed the problem in de.Wikipedia, where it present for vector-2022, but not for vector-2010 or timeless:
https://de.wikipedia.org/wiki/Wladyslaw_Buchow?useskin=vector-2022
https://de.wikipedia.org/wiki/Wladyslaw_Buchow?useskin=vector
https://de.wikipedia.org/wiki/Wladyslaw_Buchow?useskin=timesless

Any idea when this regression would be fixed? I keep hearing people complaining about this issue on other platforms.

Change #1051183 had a related patch set uploaded (by Jdlrobson; author: Jdlrobson):

[mediawiki/core@master] The "new" class should be added to the link as well as the LI element

https://gerrit.wikimedia.org/r/1051183

Change #1051183 merged by jenkins-bot:

[mediawiki/core@master] The "new" class should be added to the link as well as the LI element

https://gerrit.wikimedia.org/r/1051183

Test Result - Beta

Status: ✅ PASS
Environment: Beta
OS: macOS Sonoma 14.5
Browser: Chrome 126
Device: MBA
Emulated Device: NA

Test Artifact(s):

Test Steps

1. Visit a page that doesn't have a talk page in a private/incognito window, e.g. https://www.mediawiki.org/wiki/Development_statistics
2. Observe a blue "Discussion" link

Incognito-Blue	Non-Incognito-Blue

1. When using a non-private/incognito window, the link turns red after clicking it and returning to the original page. This isn't a part of the bug, I'm just mentioning it because it makes reproducing the issue tricky. e.g. https://www.mediawiki.org/wiki/Analytics/Archive/Logging_infrastructure/status

Incognito-Red	Non-Incognito-Red

Adding User-notice since there was significant interest in this bug (judging by the number of subscribers).

@Jdlrobson Please review below. Are the colors supposed to be opposite to the "Discussion" link?

UPDATE: per T367982#9971037

Test Result - PROD

Status: ✅ PASS
Environment: PROD
OS: macOS Sonoma 14.5
Browser: Chrome 126
Device: MBA
Emulated Device: NA

Test Artifact(s):

Test Steps

1. Visit a page that doesn't have a talk page in a private/incognito window, e.g. https://www.mediawiki.org/wiki/Zest
2. Observe a blue "Discussion" link

✅ Incognito-Blue

1. When using a non-private/incognito window, the link turns red after clicking it and returning to the original page. This isn't a part of the bug, I'm just mentioning it because it makes reproducing the issue tricky. e.g. https://www.mediawiki.org/wiki/BlueSpice

✅ Non-Incognito-Red

Observe a blue "Discussion" link

This is a pass. Blue is the fail state. Red is the pass state.

When using a non-private/incognito window, the link turns red after clicking it and returning to the original page

I'm not sure I understand - I dont' see any red in the gif? It looks like it is working as expected here? What am I missing?

The bug was about a bluelink for non-existing talk pages, so https://www.mediawiki.org/wiki/BlueSpice is not a correct example, because the talk page exists.

To my knowledge the bug has been fixed. The talk page link is blue for existing talk pages and red for non-existing ones.

@Jdlrobson @Kallichore Everything makes sense on what you said, I was just going based on the description. I will move this to Pass.

In T367982#9971037, @Jdlrobson wrote:

Observe a blue "Discussion" link

This is a pass. Blue is the fail state. Red is the pass state.

I was going what the description said to reproduce

1. Visit a page that doesn't have a talk page in a private/incognito window, e.g. https://www.mediawiki.org/wiki/MediaWiki_Platform_Team
2. Observe a blue "Discussion" link

It says to observe a blue "Discussion" link so I was looking for a Blue.

When using a non-private/incognito window, the link turns red after clicking it and returning to the original page

I'm not sure I understand - I dont' see any red in the gif? It looks like it is working as expected here? What am I missing?

As for this one, it says it's looking for a red link but it didn't say also find one that doesn't have a talk page like the first one, so I assumed I was looking for one that did.

As for this one, it says it's looking for a red link but it didn't say also find one that doesn't have a talk page like the first one, so I assumed I was looking for one that did.

Got it! Thanks! This task didn't use the bug template so I can see why it was confusing! Sorry about that!

In T367982#9916138, @matmarex wrote:

In T367982#9915003, @Mondo wrote:

I've noticed this a couple of times in Timeless, too, so it's not limited to Vector.

I can't reproduce the problem on Timeless. Can you share more details about where you see that, and a screenshot?

Sorry for my late response, but it took a while to encounter the problem again. But I just encountered it again: https://nl.wikipedia.org/w/index.php?title=Overleg_gebruiker:Roffaduft showed me a blue link, even though it was supposed to be red, as I hadn't posted the welcome message yet. I forgot to screenshot it, but it did happen.

In T367982#10055826, @Mondo wrote:

In T367982#9916138, @matmarex wrote:

In T367982#9915003, @Mondo wrote:

I've noticed this a couple of times in Timeless, too, so it's not limited to Vector.

I can't reproduce the problem on Timeless. Can you share more details about where you see that, and a screenshot?

Sorry for my late response, but it took a while to encounter the problem again. But I just encountered it again: https://nl.wikipedia.org/w/index.php?title=Overleg_gebruiker:Roffaduft showed me a blue link, even though it was supposed to be red, as I hadn't posted the welcome message yet. I forgot to screenshot it, but it did happen.

But this happens sometimes? Not on all nonexistent pages?

Dunno, need to investigate more. Either way, even if it happens *sometimes*, it's still a bug, because it shouldn't be happening. If a page doesn't exist, the link should be red. Period.

Unfortunately, there's no way to debug this unless we can reproduce the issue. @Mondo, you might want to let us know immediately when you come across the issue next time.

I certainly will. 🙂