Change 908837 had a related patch set uploaded (by Urbanecm; author: Urbanecm):

[mediawiki/extensions/GrowthExperiments@master] PersonalizedPraise: Add support for number of Flow topics

https://gerrit.wikimedia.org/r/908837

Not related this task specifically, but making four identical API requests on every step of the user carousel should really be fixed. Probably the talk page data can just be put in the store?

Also, where does the mw-heading2 used in the non-Flow version come from? I missed that in rEGRE5f6c449f9753: Frontend for Personalized praise module but I don't think we actually use that class.

Change 908837 merged by jenkins-bot:

[mediawiki/extensions/GrowthExperiments@master] PersonalizedPraise: Add support for number of Flow topics

https://gerrit.wikimedia.org/r/908837

In T334424#8788003, @Tgr wrote:

Not related this task specifically, but making four identical API requests on every step of the user carousel should really be fixed. Probably the talk page data can just be put in the store?

Agreed. I'll move it to the store, definitely.

Also, where does the mw-heading2 used in the non-Flow version come from? I missed that in rEGRE5f6c449f9753: Frontend for Personalized praise module but I don't think we actually use that class.

From action=parse. If you check action=parse output for my talk, you'll see many divs with classes like mw-heading mw-heading2. It might be a DiscussionTools-provided enhancement (which wouldn't be an issue, as we interact with DiscussionTools closely anyway).

Hm, it didn't work for me locally, I'll test again with DiscussionTools installed.