In reply to briefly shows (null)

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When it's loading the reply message, it briefly shows
In reply to (null)

Pretty sure this is because the following request is not implemented
20:30:33 | 404 | 25.483µs | 10.0.0.177 | GET | /i/statuses/654016686174706716149349827304658319722753481676660076976812935158019233736509578718231740944698486779644991760/activity/summary.json | Cannot GET /i/statuses/654016686174706716149349827304658319722753481676660076976812935158019233736509578718231740944698486779644991760/activity/summary.json

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Nope! My hypothesis was wrong, i bet it's probably in_reply_to_screen_name not being set.