Sync session failed with "connection lost"

[adzialocha]

Sometimes observing:

2026-01-12T10:13:07.482904Z  WARN p2panda_net_next::actors::sync::manager: sync session failed: IO("internal i/o stream error connection lost") name.session_id=0 topic="398e28e246"

.. followed by:

2026-01-12T10:10:41.219881Z ERROR reflection_doc::document::imp: Failed to get current insert cursor position of remote user Orange Buffalo: Cannot find relative position. The id is not found.
2026-01-12T10:10:41.233195Z ERROR reflection_doc::document::imp: Failed to get current insert cursor position of remote user Orange Buffalo: Cannot find relative position. The id is not found.

.. but these are rather symptoms of the previous error.