Mermaid display abnormally

[poor-defined]

The mermaid content is correct, however, the chart displaied is abnormal.

sequenceDiagram
    participant Ex as 111
    participant FT as 222
    participant KP as 333
    participant K as 444
    participant UI as 555

    Ex->>FT: 1. 获取数据
    FT->>KP: 2. 传入原始数据
    Note over KP: 3. 不做归一化, 保留原始
    KP->>KP: 4. 滑动窗口切片 
    KP->>K: 5. 传入原始数据
    Note over K: 6.内部归一化+推理
    K->>KP: 7. 返回预测 
    KP->>FT: 8. 计算信号
    FT->>UI: 9. 输出信号

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