I recently rebuilt my self-hosted discourse and I see now that all chat replies lost the excerpt text. The reply-to avatar is still visible though and the href id is correct and clicking takes you to the correct post.
Making a new reply shows the excerpt after posting, but if you close the chat it disappears like the others.
3.3.0.beta2-dev (f7a1272fa4)
(I have no related plugins or modifications to interfere AFAIK)

         {
            "id": 1892,
            "message": "testing reply",
            "cooked": "\u003cp\u003etesting reply\u003c/p\u003e",
            "created_at": "2024-04-29T19:02:11Z",
            "excerpt": "testing reply",
            "chat_channel_id": 2,
            "streaming": false,
            "user": {...},
            "mentioned_users": [],
            "available_flags": [],
            "chat_webhook_event": null,
            "in_reply_to": {
                "id": 1880,
                "cooked": "\u003cp\u003eearn teh powahz\u003c/p\u003e",
                "excerpt": null,
                "user": {...},
                "chat_webhook_event": null
            },
            "uploads": []
        },
