Root cause:

This class of bug comes from how the dynamic tasks are generated: the configuration (the stream/wiki list) is fetched once, at the start of the DAG run, from ESC.

The dynamic task mapping then indexes tasks by their numerical map_index (0, 1, 2, …), which is just a positional pointer into that list. If the list changes between runs (ex: an entry added, removed, or reordered) the same map_index now points to a different stream than it did on the original run. That's why the logs appear "mixed up", because the underlying list shifted.

Possible fix:

The proper fix would be to snapshot the config somewhere stable (xcom ?) (so a given run always resolves the same map_index), rather than re-fetching it from ESC on each attempt. But it introduces its own consistency problems (sometimes config update is expected) and adds complexity.

Given that, I'm unassigning myself for now.
Happy to pick it back up when the need to implement it becomes more pressing.