2026-08-27 - production
15:18 <krinkle@deploy1003> krinkle: Backport for [[gerrit:1311058|MathML+MathJax rollout to phase 3 (Wikibooks) (T271001)]], [[gerrit:1311059|MathML+MathJax rollout to phase 4 (Wikisource) (T271001)]] synced to the testservers (see https://wikitech.wikimedia.org/wiki/Mwdebug). Changes can now be verified there. [production]