Phase 2b wikis (T380912) have Flow as their default system. For Phase 2a wikis (T380910), it could be the case, at some specific namespaces.

This is probably the case at Catalan Wikipedia, where namespace 103 has Flow as default talk pages system.

1. ✅find all wikis where Flow is the default talk pages system (whole wiki, or whole namespaces)
   • per wmgFlowNamespaces at https://noc.wikimedia.org/conf/InitialiseSettings.php.txt
2. ✅report that list here
   • ns-103 at cawiki
3. for concerned phase 2a wikis, make Discussion tools the default system for all namespaces
   • T381295: Disabling Flow in cawiki 'Viquiprojecte Discussió' namespace