Change 823749 had a related patch set uploaded (by Bartosz Dziewoński; author: Bartosz Dziewoński):

[operations/mediawiki-config@master] Make DiscussionTools topicsubscription opt-out on A/B test wikis

https://gerrit.wikimedia.org/r/823749

Change 823749 merged by jenkins-bot:

[operations/mediawiki-config@master] Make DiscussionTools topicsubscription opt-out on A/B test wikis

https://gerrit.wikimedia.org/r/823749

Tested on itwiki
✅ People who meet the criteria below will see subscribe links next to all == H2== section headings, across namespaces, that contain discussions:

@EAkinloose noticed while reviewing T300904 that I forgot to make automatic topic subscriptions available as well.

Change 826646 had a related patch set uploaded (by Bartosz Dziewoński; author: Bartosz Dziewoński):

[operations/mediawiki-config@master] Make DiscussionTools autotopicsub also opt-out on A/B test wikis

https://gerrit.wikimedia.org/r/826646

Change 826646 merged by jenkins-bot:

[operations/mediawiki-config@master] Make DiscussionTools autotopicsub also opt-out on A/B test wikis

https://gerrit.wikimedia.org/r/826646

Mentioned in SAL (#wikimedia-operations) [2022-08-25T20:24:46Z] <urbanecm@deploy1002> Synchronized wmf-config/InitialiseSettings.php: f37eff3f1607c898120c4f151b0af0d4b6bfdd19: Make DiscussionTools autotopicsub also opt-out on A/B test wikis (T314693) (duration: 03m 37s)

✅ Make Topic Subscriptions available by default at A/B test wikis (desktop)

Tested on nlwiki, itwiki, and amwiki

⚠️ Observation:

Cc: @matmarex

In T314693#8187506, @EAkinloose wrote:

⚠️ Observation:
Not all section headings have the [subscribe] link when Discussion tools is enabled and Show discussion activity is disabled

On F35490504, the section where the [subscribe] link doesn’t appear seems to horizontally overflow; the link may be there, just off-screen. On F35490499/F35490501, the actually version without Topic Containers is correct, and the version with Topic Containers works unexpectedly (T315821), since the given section contains no signature. (Notice that the topic container itself doesn’t appear in that section even when it’s enabled.)

Yes, what @Tacsipacsi wrote is right (thanks).

In T314693#8189920, @Tacsipacsi wrote:

In T314693#8187506, @EAkinloose wrote:

⚠️ Observation:
Not all section headings have the [subscribe] link when Discussion tools is enabled and Show discussion activity is disabled

On F35490504, the section where the [subscribe] link doesn’t appear seems to horizontally overflow; the link may be there, just off-screen. On F35490499/F35490501, the actually version without Topic Containers is correct, and the version with Topic Containers works unexpectedly (T315821), since the given section contains no signature. (Notice that the topic container itself doesn’t appear in that section even when it’s enabled.)

Thanks for clarifying.