ReadingList AB test not loading with overrideExperimentGroup
Closed, DeclinedPublicBUG REPORT
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Assigned To

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Authored By

	aude
	Nov 6 2025, 4:10 PM

Description

Steps to replicate the issue (include links if applicable):

$wgMetricsPlatformEnableExperimentOverrides = true;

mw.xLab.overrideExperimentGroup('we-3-3-4-reading-list-test1', 'treatment');

Click on the bookmark save button or click on pages in the reading list on Special:ReadingLists and it should be possible to see events in the browser console.

What happens?:

What should have happened instead?:

overrideExperimentGroup should work alongside the check for the 'readinglists-web-ui-enabled' preference for loading the readingListAB.js

Software version (on Special:Version page; skip for WMF-hosted wikis like Wikipedia):

Other information (browser name/version, screenshots, etc.):

Related Changes in Gerrit:

	Subject	Repo	Branch	Lines +/-
	Fix loading readingListAB.js with overrideExperimentGroup	mediawiki/extensions/WikimediaEvents	master	+6 -2

Restricted Application added a subscriber: Aklapper. · View Herald TranscriptNov 6 2025, 4:10 PM

Change #1202747 had a related patch set uploaded (by Aude; author: Aude):

[mediawiki/extensions/WikimediaEvents@master] Fix loading readingListAB.js with overrideExperimentGroup

Change #1202747 abandoned by Aude:

[mediawiki/extensions/WikimediaEvents@master] Fix loading readingListAB.js with overrideExperimentGroup

Reason:

I can workaround this

aude closed this task as Declined.Nov 6 2025, 7:55 PM

aude removed aude as the assignee of this task.