If anyone saw odd behaviour just now in the demo, that was my fault. One of the codemod rules was leaking into the shared rule registry instead of being scoped to the current user. I have isolated that and it should be fixed.

The core engine was not affected. The issue was simply that a user taught rule was visible to other demo modes, which made it fire that rule everywhere.

If anyone notices anything else strange, let me know. It should behave normally now.