Change 540693 had a related patch set uploaded (by DannyS712; owner: DannyS712):
[mediawiki/extensions/PageTriage@master] PageTriageList: provide correct talk_page_title

https://gerrit.wikimedia.org/r/540693

@MusikAnimal would the growth team / you be willing to review the patch provided?

@ifried care to take a look?

Still able to reproduce as of 11/09/22. Will try to get the above patch to pass CI so we can merge it.

I'd be happy to review this, but I'm going to need some better QA steps for this ticket (e.g. written for somebody who has basic knowledge of how PageTriage works) to understand what the issue here so I can confirm the fix.

In T234575#8726057, @Jdlrobson wrote:

I'd be happy to review this, but I'm going to need some better QA steps for this ticket (e.g. written for somebody who has basic knowledge of how PageTriage works) to understand what the issue here so I can confirm the fix.

@Jdlrobson, I've added QA steps to the ticket description.

Thanks for the replication steps. That was very helpful. Results from testing...

Before:

Note, if the draft talk namespace is not defined, this will result in a bad title. I don't think this is likely to happen in Wikimedia production, but for completeness it may make sense to omit the field entirely when that's the case (suggest this is tackled in a follow up)
Example configuration:

$wgPageTriageDraftNamespaceId = 118;
$wgExtraNamespaces[ $wgPageTriageDraftNamespaceId ] = 'Draft';
// disable talk namespace
// $wgExtraNamespaces[ $wgPageTriageDraftNamespaceId + 1 ] = 'Draft_talk';

Change 540693 merged by jenkins-bot:

[mediawiki/extensions/PageTriage@master] PageTriageList: Provide correct `talk_page_title`

https://gerrit.wikimedia.org/r/540693