I'm seeing a 50kb spike in JavaScript loaded on the mobile site on the beta cluster since 28th November:
https://grafana.wikimedia.org/dashboard/db/mobile-2g?orgId=1&panelId=69&fullscreen
This is HUGE (190kb to 260kb) and seems to be due to this new JS being loaded:
https://en.m.wikipedia.beta.wmflabs.org/w/load.php?debug=false&lang=en&modules=oojs-ui-core%2Coojs-ui-widgets%7Coojs-ui.styles.icons-editing-advanced&skin=minerva&version=1c9erng
This does not appear to be the case in production.
What changes recently might have caused this?