My steps to reproduce:
- Register on https://srwiki-dev.wmflabs.org (you can change interface to en or lang which you want)
- Visit it from mobile device
Actual results:
There is a box with content of growthexperiments-homepage-discovery-mobile-nonhomepage-banner-text message.
In box is arrow which points to left menu which is different when Advanced Mobile Contributions is enabled on-wiki and when it isn't.
See video:
Expected results:
If on-wiki is Advanced Mobile Contributions option enabled, arrow should point to correct place.