When we added code in guidance.js to manually switch to edit mode, we didn't account for the fact that users who have never clicked edit will see this blue pulsing dot. It's usually removed after a user clicks edit themselves, but our mode switching code didn't trigger that. We should remove the dot ourselves in the guidance.js code.
Customize query in gerrit
|mediawiki/extensions/GrowthExperiments||master||+9 -0||Don't show pulsing blue dot for link-recommendation task type|
Checked in betalabs - the issue is not present.
Note: Interesting that I noticed the issue around April 1 in testwiki - then it was gone and it's not present there anymore although the fix is not deployed yet.
Added to my post-deployment checklist.